SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q/A

(Amendment No. 1)

[X] QUARTERLY REPORT
PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES

EXCHANGE ACT OF 1934

FOR THE QUARTERLY PERIOD ENDED MARCH 31, 2007

OR

[    ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES

EXCHANGE ACT OF 1934

For the transition period from _________ to __________

Commission file number: 0-25317

INVITROGEN CORPORATION

(Exact name of registrant as specified in its charter)



|                                                               |  |                                     
|-------------------------------------------------------------- |  | ------------------------------------
|Delaware                                                       |  | 33-0373077                          
|(State or other jurisdiction of incorporation or organization) |  | (I.R.S. Employer Identification No.)



|                                         |  |           
|---------------------------------------- |  | ----------
|1600 Faraday Avenue, Carlsbad, CA        |  | 92008     
|(Address of principal executive offices) |  | (Zip Code)

Registrants telephone number, including area code: (760) 603-7200

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934
during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes [X]    No
[    ].

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, or a non-accelerated filer.
See definition of accelerated filer and large accelerated filer in Rule 12b-2 of the Exchange Act. (Check One)

Large accelerated filer
[X]    Accelerated filer [    ]    Non-accelerated filer [    ]

Indicate
by checkmark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act). Yes [    ] or No [X]

As of May 7,
2007, 46,751,579 shares of the Registrants Common Stock were outstanding.



---

EXPLANATORY NOTE

This amendment to the registrants Quarterly Report on Form 10-Q for the period ended March 31, 2007 filed with the Securities and Exchange Commission on May 10, 2007 (the Form 10-Q) is
being filed solely to correct the inadvertent omission of a portion of the text in Item 3 and Item 4 of Part 1 to the Form 10-Q. This Form 10-Q/A does not alter any other part of the Form 10-Q, including the financial statements and
managements discussion and analysis of financial condition and results of operations.



2



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PART I. FINANCIAL INFORMATION



|ITEM 1. | Financial Statements
|------- | --------------------

INVITROGEN CORPORATION

CONSOLIDATED BALANCE SHEETS

(In thousands, except par value and share data)



|                                                                                                                                           |  |               |           |   |                  |   |           |  
|------------------------------------------------------------------------------------------------------------------------------------------ |  | ------------- | --------- | - | ---------------- | - | --------- | -
|                                                                                                                                           |  | March 31,2007 |           |   | December 31,2006 |  
|                                                                                                                                           |  | (Unaudited)   |           |   |                  |  
|ASSETS                                                                                                                                     |  |               |           |   |                  |   |           |  
|Current assets:                                                                                                                            |  |               |           |   |                  |   |           |  
|Cash and cash equivalents                                                                                                                  |  | $             | 329,436   |   |                  | $ | 343,181   |  
|Short-term investments                                                                                                                     |  |               |          |   |                  |   | 8,914     |  
|Restricted cash and investments                                                                                                            |  |               | 4,115     |   |                  |   | 4,393     |  
|Trade accounts receivable, net of allowance for doubtful accounts of $8,041 and $6,968, respectively                                       |  |               | 178,000   |   |                  |   | 177,510   |  
|Inventories                                                                                                                                |  |               | 152,928   |   |                  |   | 146,400   |  
|Deferred income tax assets                                                                                                                 |  |               | 40,338    |   |                  |   | 35,184    |  
|Prepaid expenses and other current assets                                                                                                  |  |               | 26,435    |   |                  |   | 25,022    |  
|Assets held for sale (including cash and cash equivalents of $17,287 and $23,712 as of March 31, 2007 and December 31, 2006,
respectively) |  |               | 260,610   |   |                  |   | 262,575   |  
|                                                                                                                                           |  |               |           |   |                  |   |           |  
|Total current assets                                                                                                                       |  |               | 991,862   |   |                  |   | 1,003,179 |  
|                                                                                                                                           |  |               |           |   |                  |   |           |  
|Long-term investments                                                                                                                      |  |               | 2,850     |   |                  |   | 2,850     |  
|Property and equipment, net                                                                                                                |  |               | 274,984   |   |                  |   | 275,419   |  
|Goodwill                                                                                                                                   |  |               | 1,487,901 |   |                  |   | 1,480,008 |  
|Intangible assets, net                                                                                                                     |  |               | 345,588   |   |                  |   | 371,705   |  
|Deferred income tax assets                                                                                                                 |  |               | 7,117     |   |                  |   | 1,858     |  
|Other assets                                                                                                                               |  |               | 47,167    |   |                  |   | 47,856    |  
|                                                                                                                                           |  |               |           |   |                  |   |           |  
|Total assets                                                                                                                               |  | $             | 3,157,469 |   |                  | $ | 3,182,875 |  
|                                                                                                                                           |  |               |           |   |                  |   |           |  
|LIABILITIES AND STOCKHOLDERS EQUITY                                                                                                       |  |               |           |   |                  |   |           |  
|Current liabilities:                                                                                                                       |  |               |           |   |                  |   |           |  
|Current portion of long-term debt                                                                                                          |  | $             | 558       |   |                  | $ | 1,961     |  
|Accounts payable                                                                                                                           |  |               | 90,827    |   |                  |   | 85,274    |  
|Shut down accrual                                                                                                                          |  |               | 35,459    |   |                  |   | 28,751    |  
|Accrued expenses and other current liabilities                                                                                             |  |               | 66,465    |   |                  |   | 91,396    |  
|Income taxes                                                                                                                               |  |               | 19,331    |   |                  |   | 20,704    |  
|Liabilities held for sale                                                                                                                  |  |               | 29,909    |   |                  |   | 28,171    |  
|                                                                                                                                           |  |               |           |   |                  |   |           |  
|Total current liabilities                                                                                                                  |  |               | 242,549   |   |                  |   | 256,257   |  
|                                                                                                                                           |  |               |           |   |                  |   |           |  
|Long-term debt                                                                                                                             |  |               | 1,150,710 |   |                  |   | 1,150,824 |  
|Pension liabilities                                                                                                                        |  |               | 37,604    |   |                  |   | 38,444    |  
|Deferred income tax liabilities                                                                                                            |  |               | 91,769    |   |                  |   | 92,942    |  
|Income taxes                                                                                                                               |  |               | 20,269    |   |                  |   |          |  
|Other long-term obligations, deferred credits and reserves                                                                                 |  |               | 15,256    |   |                  |   | 13,981    |  
|                                                                                                                                           |  |               |           |   |                  |   |           |  
|Total liabilities                                                                                                                          |  |               | 1,558,157 |   |                  |   | 1,552,448 |  
|                                                                                                                                           |  |               |           |   |                  |   |           |  
|Stockholders equity:                                                                                                                      |  |               |           |   |                  |   |           |  
|Preferred stock; $0.01 par value, 6,405,884 shares authorized; no shares issued or outstanding                                             |  |               |          |   |                  |   |          |  
|Common stock; $0.01 par value, 125,000,000 shares authorized; 59,271,671 and 58,967,060 shares issued, respectively                        |  |               | 593       |   |                  |   | 590       |  
|Additional paid-in-capital                                                                                                                 |  |               | 2,246,306 |   |                  |   | 2,220,536 |  
|Accumulated other comprehensive income                                                                                                     |  |               | 50,019    |   |                  |   | 34,994    |  
|Retained earnings                                                                                                                          |  |               | (25,856   | ) |                  |   | (54,680   | )
|Less cost of treasury stock: 12,632,378 and 11,111,491, respectively                                                                       |  |               | (671,750  | ) |                  |   | (571,013  | )
|                                                                                                                                           |  |               |           |   |                  |   |           |  
|Total stockholders equity                                                                                                                 |  |               | 1,599,312 |   |                  |   | 1,630,427 |  
|                                                                                                                                           |  |               |           |   |                  |   |           |  
|Total liabilities and stockholders equity                                                                                                 |  | $             | 3,157,469 |   |                  | $ | 3,182,875 |  
|                                                                                                                                           |  |               |           |   |                  |   |           |  

The accompanying notes are an integral part of these consolidated financial statements.



3



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INVITROGEN CORPORATION

CONSOLIDATED STATEMENTS OF OPERATIONS

(In thousands, except per share data)



|                                                                              |  |                                      |         |   |      |   |         |  
|----------------------------------------------------------------------------- |  | ------------------------------------ | ------- | - | ---- | - | ------- | -
|                                                                              |  | For the three months ended March 31, |        
|                                                                              |  | 2007                                 |         |   | 2006 |  
|                                                                              |  | (Unaudited)                          |        
|Revenues                                                                      |  | $                                    | 308,653 |   |      | $ | 280,041 |  
|Cost of revenues, excluding purchased intangible amortization discussed below |  |                                      | 109,733 |   |      |   | 100,174 |  
|                                                                              |  |                                      |         |   |      |   |         |  
|Gross profit                                                                  |  |                                      | 198,920 |   |      |   | 179,867 |  
|                                                                              |  |                                      |         |   |      |   |         |  
|Operating expenses:                                                           |  |                                      |         |   |      |   |         |  
|Sales and marketing                                                           |  |                                      | 57,215  |   |      |   | 57,349  |  
|General and administrative                                                    |  |                                      | 40,521  |   |      |   | 36,889  |  
|Research and development                                                      |  |                                      | 27,445  |   |      |   | 27,728  |  
|Purchased intangibles amortization                                            |  |                                      | 27,586  |   |      |   | 28,013  |  
|Business integration costs                                                    |  |                                      | 1,798   |   |      |   | 2,131   |  
|                                                                              |  |                                      |         |   |      |   |         |  
|Total operating expenses                                                      |  |                                      | 154,565 |   |      |   | 152,110 |  
|                                                                              |  |                                      |         |   |      |   |         |  
|Operating income                                                              |  |                                      | 44,355  |   |      |   | 27,757  |  
|                                                                              |  |                                      |         |   |      |   |         |  
|Other income (expense):                                                       |  |                                      |         |   |      |   |         |  
|Interest income                                                               |  |                                      | 3,969   |   |      |   | 6,490   |  
|Interest expense                                                              |  |                                      | (7,184  | ) |      |   | (8,329  | )
|Other income (expense), net                                                   |  |                                      | (254    | ) |      |   | 382     |  
|                                                                              |  |                                      |         |   |      |   |         |  
|Total other income (expense), net                                             |  |                                      | (3,469  | ) |      |   | (1,457  | )
|                                                                              |  |                                      |         |   |      |   |         |  
|Income from continuing operations, before provision for income taxes          |  |                                      | 40,886  |   |      |   | 26,300  |  
|Income tax provision                                                          |  |                                      | (10,994 | ) |      |   | (7,995  | )
|                                                                              |  |                                      |         |   |      |   |         |  
|Net income from continuing operations                                         |  |                                      | 29,892  |   |      |   | 18,305  |  
|Net income from discontinued operations, net of tax                           |  |                                      | 374     |   |      |   | 913     |  
|                                                                              |  |                                      |         |   |      |   |         |  
|Net Income                                                                    |  | $                                    | 30,266  |   |      | $ | 19,218  |  
|                                                                              |  |                                      |         |   |      |   |         |  
|Basic earnings per common share:                                              |  |                                      |         |   |      |   |         |  
|Net income from continuing operations                                         |  | $                                    | 0.63    |   |      | $ | 0.35    |  
|Net income from discontinued operations                                       |  |                                      | 0.01    |   |      |   | 0.01    |  
|                                                                              |  |                                      |         |   |      |   |         |  
|Net Income                                                                    |  | $                                    | 0.64    |   |      | $ | 0.36    |  
|                                                                              |  |                                      |         |   |      |   |         |  
|Weighted average shares outstanding                                           |  |                                      | 47,344  |   |      |   | 53,000  |  
|Diluted earnings per common share:                                            |  |                                      |         |   |      |   |         |  
|Net income from continuing operations                                         |  | $                                    | 0.62    |   |      | $ | 0.34    |  
|Net income from discontinued operations                                       |  |                                      | 0.01    |   |      |   | 0.01    |  
|                                                                              |  |                                      |         |   |      |   |         |  
|Net Income                                                                    |  | $                                    | 0.63    |   |      | $ | 0.35    |  
|                                                                              |  |                                      |         |   |      |   |         |  
|Weighted average shares outstanding                                           |  |                                      | 48,307  |   |      |   | 54,822  |  

The accompanying notes are an integral part of these consolidated financial statements.



4



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INVITROGEN CORPORATION

CONSOLIDATED STATEMENTS OF CASH FLOWS

(In thousands)



|                                                                                                                                      |  |                                      |         |   |      |   |         |  
|------------------------------------------------------------------------------------------------------------------------------------- |  | ------------------------------------ | ------- | - | ---- | - | ------- | -
|                                                                                                                                      |  | For the three months ended March 31, |        
|                                                                                                                                      |  | 2007                                 |         |   | 2006 |  
|                                                                                                                                      |  | (Unaudited)                          |        
|CASH FLOWS FROM OPERATING ACTIVITIES:                                                                                                 |  |                                      |         |   |      |   |         |  
|Net income                                                                                                                            |  | $                                    | 30,266  |   |      | $ | 19,218  |  
|Adjustments to reconcile net income to net cash provided by operating activities, net of effects of businesses acquired and
divested: |  |                                      |         |   |      |   |         |  
|Depreciation                                                                                                                          |  |                                      | 11,173  |   |      |   | 10,019  |  
|Amortization of intangible assets                                                                                                     |  |                                      | 29,796  |   |      |   | 30,455  |  
|Amortization of deferred debt issue costs                                                                                             |  |                                      | 360     |   |      |   | 597     |  
|Amortization of premiums on investments, net of accretion of discounts                                                                |  |                                      | 36      |   |      |   | (1,339  | )
|Share-based compensation                                                                                                              |  |                                      | 11,439  |   |      |   | 12,045  |  
|Incremental tax benefits from stock options exercised                                                                                 |  |                                      | (2,491  | ) |      |   | (1,485  | )
|Deferred income taxes                                                                                                                 |  |                                      | 11,349  |   |      |   | (15,510 | )
|Other non-cash adjustments                                                                                                            |  |                                      | (201    | ) |      |   | 3,528   |  
|Changes in operating assets and liabilities:                                                                                          |  |                                      |         |   |      |   |         |  
|Trade accounts receivable                                                                                                             |  |                                      | (535    | ) |      |   | 910     |  
|Inventories                                                                                                                           |  |                                      | (5,477  | ) |      |   | (12,036 | )
|Prepaid expenses and other current assets                                                                                             |  |                                      | (2,738  | ) |      |   | (428    | )
|Other assets                                                                                                                          |  |                                      | 1,835   |   |      |   | 895     |  
|Accounts payable                                                                                                                      |  |                                      | 7,389   |   |      |   | (3,557  | )
|Accrued expenses and other current liabilities                                                                                        |  |                                      | (10,732 | ) |      |   | (25,576 | )
|Income taxes                                                                                                                          |  |                                      | (13,602 | ) |      |   | 15,443  |  
|                                                                                                                                      |  |                                      |         |   |      |   |         |  
|Net cash provided by operating activities                                                                                             |  |                                      | 67,867  |   |      |   | 33,179  |  
|                                                                                                                                      |  |                                      |         |   |      |   |         |  
|CASH FLOWS FROM INVESTING ACTIVITIES:                                                                                                 |  |                                      |         |   |      |   |         |  
|Maturities of available-for-sale securities                                                                                           |  |                                      | 8,878   |   |      |   | 82,980  |  
|Purchases of available-for-sale securities                                                                                            |  |                                      | 291     |   |      |   |        |  
|Net cash paid for business combinations                                                                                               |  |                                      | (2,544  | ) |      |   | (19,057 | )
|Purchases of property and equipment                                                                                                   |  |                                      | (10,777 | ) |      |   | (14,191 | )
|Payments for intangible assets                                                                                                        |  |                                      |        |   |      |   | (6,058  | )
|                                                                                                                                      |  |                                      |         |   |      |   |         |  
|Net cash provided by investing activities                                                                                             |  |                                      | (4,152  | ) |      |   | 43,674  |  
|                                                                                                                                      |  |                                      |         |   |      |   |         |  
|CASH FLOWS FROM FINANCING ACTIVITIES:                                                                                                 |  |                                      |         |   |      |   |         |  
|Principal payments on long-term obligations                                                                                           |  |                                      |        |   |      |   | (45,098 | )
|Principal payments on lines of credit                                                                                                 |  |                                      | (3,060  | ) |      |   |        |  
|Purchase of treasury stock                                                                                                            |  |                                      | (99,671 | ) |      |   |        |  
|Proceeds from sale of common stock                                                                                                    |  |                                      | 14,452  |   |      |   | 10,287  |  
|Incremental tax benefits from stock options exercised                                                                                 |  |                                      | 2,491   |   |      |   | 1,485   |  
|                                                                                                                                      |  |                                      |         |   |      |   |         |  
|Net cash (used in) provided by financing activities                                                                                   |  |                                      | (85,788 | ) |      |   | (33,326 | )
|Effect of exchange rate changes on cash                                                                                               |  |                                      | 1,903   |   |      |   | 1,225   |  
|                                                                                                                                      |  |                                      |         |   |      |   |         |  
|Net increase in cash and cash equivalents                                                                                             |  |                                      | (20,170 | ) |      |   | 44,752  |  
|Cash and cash equivalents, beginning of period                                                                                        |  |                                      | 366,893 |   |      |   | 435,230 |  
|                                                                                                                                      |  |                                      |         |   |      |   |         |  
|Cash and cash equivalents, end of period                                                                                              |  | $                                    | 346,723 |   |      | $ | 479,982 |  
|                                                                                                                                      |  |                                      |         |   |      |   |         |  

The accompanying notes are an integral part of these consolidated financial statements.



5



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INVITROGEN CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)



|1. | Basis of Presentation
|-- | ---------------------

Financial Statement Preparation

The unaudited consolidated financial statements have been prepared by Invitrogen Corporation according to the rules and regulations
of the Securities and Exchange Commission (SEC) and, therefore, certain information and disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States have been
omitted.

In the opinion of management, the accompanying unaudited consolidated financial statements for the periods presented reflect all
adjustments, which are normal and recurring, necessary to fairly state the financial position, results of operations and cash flows. These unaudited consolidated financial statements should be read in conjunction with the audited financial
statements included in our Annual Report on Form 10-K for the fiscal year ended December 31, 2006 filed with the Securities and Exchange Commission (SEC) on March 1, 2007.

The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make
estimates and assumptions that affect the reported amounts of assets, liabilities, disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting
period. Actual results could differ from those estimates.

Principles of Consolidation

The consolidated financial statements include the accounts of Invitrogen Corporation and its majority owned or controlled subsidiaries collectively
referred to as Invitrogen (the Company). All significant intercompany accounts and transactions have been eliminated in consolidation. For purposes of these Notes to Consolidated Financial Statements, gross profit is defined as revenues less cost of
revenues and gross margin is defined as gross profit divided by revenues. Operating income is defined as gross profit less operating expenses, and operating margin is defined as operating income divided by revenues.

Discontinued operations relate to the sale of the Companys BioReliance business unit, which was sold on April 12, 2007, to Avista Capital
partners and the sale of BioSource Europe, S.A., a diagnostic business located in Belgium, which was sold on February 1, 2007 to a private investor group in Belgium. Unless otherwise indicated, all amounts in the prior period financial
statements have been reclassified to conform to the current period presentation. (See Note 3).

Long-Lived Assets

The Company periodically re-evaluates the original assumptions and rationale utilized in the establishment of the carrying value and estimated lives of
its long-lived assets. The criteria used for these evaluations include managements estimate of the assets continuing ability to generate income from operations and positive cash flow in future periods as well as the strategic
significance of any intangible asset to the Companys business objectives. If assets are considered to be impaired, the impairment recognized is the amount by which the carrying value of the assets exceeds the fair value of the assets, which is
determined by applicable market prices, when available.

Computation of Earnings Per Share

Basic earnings per share was computed by dividing net income by the weighted average number of common shares outstanding during the period. Diluted
earnings per share reflects the potential dilution that could occur from the following items:



| |  |  | Convertible subordinated notes and contingently convertible notes where the effect of those securities is dilutive;
| | - |  | -------------------------------------------------------------------------------------------------------------------



| |  |  | Dilutive stock options; and
| | - |  | ---------------------------



| |  |  | Unvested restricted stock
| | - |  | -------------------------



6



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Computations for basic and diluted earnings per share are as follows:



|                                                                                |  |                        |        |                      |        |                    |   |     
|------------------------------------------------------------------------------- |  | ---------------------- | ------ | -------------------- | ------ | ------------------ | - | ----
|(in thousands, except per share data)                                           |  |                        |        |                      |        |                   
|Three Months Ended March 31, 2007                                               |  | Net Income (Numerator) |        | Shares (Denominator) |        | Earnings Per Share
|Basic earnings per share:                                                       |  |                        |        |                      |        |                    |   |     
|Net income from continuing operations                                           |  | $                      | 29,892 |                      |        |                    | $ | 0.63
|Net income from discontinued operations, net of tax                             |  |                        | 374    |                      |        |                    |   | 0.01
|                                                                                |  |                        |        |                      |        |                    |   |     
|Total basic earnings                                                            |  | $                      | 30,266 |                      | 47,344 |                    | $ | 0.64
|                                                                                |  |                        |        |                      |        |                    |   |     
|Diluted earnings per share:                                                     |  |                        |        |                      |        |                    |   |     
|Net income from continuing operations                                           |  | $                      | 29,892 |                      |        |                    |   |     
|Dilutive stock options                                                          |  |                        |       |                      | 717    |                    |   |     
|Unvested restricted stock                                                       |  |                        |       |                      | 69     |                    |   |     
|2% Convertible Senior Notes due 2023                                            |  |                        | 30     |                      | 139    |                    |   |     
|11/2%
Convertible Senior Notes due 2024                                         |  |                        | 10     |                      | 38     |                    |   |     
|                                                                                |  |                        |        |                      |        |                    |   |     
|Net income from continuing operations plus assumed conversions                  |  |                        | 29,932 |                      |        |                    | $ | 0.62
|Net income from discontinued operations plus assumed conversions                |  |                        | 374    |                      |        |                    |   | 0.01
|                                                                                |  |                        |        |                      |        |                    |   |     
|Total diluted earnings                                                          |  | $                      | 30,306 |                      | 48,307 |                    | $ | 0.63
|                                                                                |  |                        |        |                      |        |                    |   |     
|Potentially dilutive securities not included above since they are antidilutive: |  |                        |        |                      |        |                    |   |     
|Antidilutive stock options                                                      |  |                        |        |                      | 5,115  |                    |   |     
|                                                                                |  |                        |       
|Three Months Ended March 31, 2006                                               |  |                        |        |                      |        |                   
|Basic earnings per share:                                                       |  |                        |        |                      |        |                    |   |     
|Net income from continuing operations                                           |  | $                      | 18,305 |                      |        |                    | $ | 0.35
|Net income from discontinued operations, net of tax                             |  |                        | 913    |                      |        |                    |   | 0.01
|                                                                                |  |                        |        |                      |        |                    |   |     
|Total basic earnings                                                            |  | $                      | 19,218 |                      | 53,000 |                    | $ | 0.36
|                                                                                |  |                        |        |                      |        |                    |   |     
|Diluted earnings per share:                                                     |  |                        |        |                      |        |                    |   |     
|Net income from continuing operations                                           |  | $                      | 18,305 |                      |        |                    |   |     
|Dilutive stock options                                                          |  |                        |       |                      | 841    |                    |   |     
|Unvested restricted stock                                                       |  |                        |       |                      | 82     |                    |   |     
|2% Convertible Senior Notes due 2023                                            |  |                        | 117    |                      | 610    |                    |   |     
|11/2%
Convertible Senior Notes due 2024                                         |  |                        | 72     |                      | 289    |                    |   |     
|                                                                                |  |                        |        |                      |        |                    |   |     
|Net income from continuing operations plus assumed conversions                  |  | $                      | 18,494 |                      |        |                    | $ | 0.34
|Net income from discontinued operations plus assumed conversions                |  |                        | 913    |                      |        |                    |   | 0.01
|                                                                                |  |                        |        |                      |        |                    |   |     
|Total diluted earnings                                                          |  | $                      | 19,407 |                      | 54,822 |                    | $ | 0.35
|                                                                                |  |                        |        |                      |        |                    |   |     
|Potentially dilutive securities not included above since they are antidilutive: |  |                        |        |                      |        |                    |   |     
|Antidilutive stock options                                                      |  |                        |        |                      | 4,184  |                    |   |     
|21/4%
Convertible Subordinated Notes due 2006                                   |  |                        |        |                      | 2,591  |                    |   |     

Share-Based Compensation

The Company has ten stock option plans: the 1995, 1997, 2000, 2001, 2002 and 2004 Invitrogen Corporation stock option plans, the 1996 and 1998 NOVEX Stock
Option/Stock Issuance Plans, the Life Technologies 1995 and 1997 Long-Term Incentive Plans. During 2004, the Companys shareholders approved the 2004 Invitrogen Equity Incentive Plan (the 2004 Plan), which replaced the Companys 1995,
1997, 2000, 2001 and 2002 stock option plans (collectively, the Prior Plans). Upon approval of the 2004 Plan, all Prior Plans were frozen and a total of 5.7 million shares of the Companys common stock were reserved for granting of new
awards under the 2004 Plan. The total shares reserved for issuance under the 2004 Plan includes all options and other awards that the Company has granted that are still outstanding under the Prior Plans as of March 31, 2007. Pursuant to an
employment agreement entered in May 2003, the Company granted an option to purchase 675,000 shares of the Companys common stock to its Chief Executive Officer, which was granted outside any of the Companys option plans discussed above.



7



---

The Companys 2004 Plan permits the granting of stock options, stock appreciation rights, restricted
stock awards, restricted stock units, performance awards and deferred stock awards of up to 10.8 million shares of stock. Shares of the Companys common stock granted under the 2004 Plan in the form of stock options or stock appreciation
rights are counted against the 2004 Plan share reserve on a one for one basis. Shares of the Companys common stock granted under the 2004 Plan as an award other than as an option or as a stock appreciation right are counted against the 2004
Plan share reserve on a basis of 1.6 shares for each share of common stock. Stock option awards are granted to eligible employees and directors at an exercise price equal to no less than the fair market value of such stock on the date of grant.
These awards, which generally vest over a period of time ranging up to four years, are exercisable in whole or in installments and expire ten years from the date of grant. Restricted stock awards and restricted stock units are granted to eligible
employees and directors and represent rights to receive shares of common stock at a future date. In addition, the Company has a qualified employee stock purchase plan (purchase rights) whereby eligible employees may elect to withhold up to 15% of
their compensation to purchase shares of the Companys stock on a quarterly basis at a discounted price equal to 85% of the lower of the employees offering price or the closing price of the stock on the date of purchase.

The Company used the Black-Scholes option-pricing model (Black-Scholes model) to value share-based employee stock option and purchase right awards, which
was also used for the Companys pro forma disclosure required under SFAS 123 prior to adoption of SFAS 123R on January 1, 2006. The determination of fair value of stock-based payment awards using an option-pricing model requires the use of
certain estimates and assumptions that affect the reported amount of share-based compensation cost recognized in the Consolidated Statements of Operations. Among these include expected term of options, estimated forfeitures, expected volatility of
the Companys stock price, expected dividends and risk-free interest rate.

Stock Options and Purchase Rights

The underlying assumptions used to value employee stock options and purchase rights granted during the three months ended March 31, 2007 and 2006
were as follows:



|                                                          |  |                              |         |   |      |   |         |  
|--------------------------------------------------------- |  | ---------------------------- | ------- | - | ---- | - | ------- | -
|                                                          |  | Three months ended March 31, |        
|                                                          |  | 2007                         |         |   | 2006 |  
|Stock Options                                             |  |                              |         |   |      |   |         |  
|Weighted average risk free interest rate                  |  |                              | 4.67    | % |      |   | 4.56    | %
|Expected term of share-based awards                       |  |                              | 4.4 yrs |   |      |   | 4.2 yrs |  
|Expected stock price volatility                           |  |                              | 31      | % |      |   | 35      | %
|Expected dividend yield                                   |  |                              | 0       | % |      |   | 0       | %
|Weighted average fair value of share-based awards granted |  | $                            | 19.15   |   |      | $ | 25.46   |  
|                                                          |  |                             
|Purchase Rights                                           |  |                              |         |   |      |   |         |  
|Weighted average risk free interest rate                  |  |                              | 4.92    | % |      |   | 4.82    | %
|Expected term of share-based awards                       |  |                              | 1.1 yrs |   |      |   | 1.1 yrs |  
|Expected stock price volatility                           |  |                              | 31      | % |      |   | 35      | %
|Expected dividend yield                                   |  |                              | 0       | % |      |   | 0       | %
|Weighted average fair value of share-based awards granted |  | $                            | 17.55   |   |      | $ | 21.29   |  

The Company is required to estimate forfeitures at the time of grant and revise those estimates in
subsequent periods on a cumulative basis in the period the estimated forfeiture rate changes. The Company considered its historical experience of pre-vesting option forfeitures as the basis to arrive at its estimated annual pre-vesting option
forfeiture rate of 9.7% and 9.0% per year for the three months ended March 31, 2007 and 2006, respectively. All option awards, including those with graded vesting, were valued as a single award with a single average expected term and are
amortized on a straight-line basis over the requisite service period of the awards, which is generally the vesting period. At March 31, 2007, there was $44.3 million remaining in unrecognized compensation cost related to employee stock options
(including stock options assumed in business combinations), which is expected to be recognized over a weighted average period of 2 years. No compensation cost was capitalized during the three months ended March 31, 2007 as the amounts involved
are not material.

Total share-based compensation expense for employee stock options (including stock options assumed in business
combinations) and purchase rights for the three months ended March 31, 2007 and 2006, respectively, was composed of the following:





|                                                       |  |                              |       |      |   |       
|------------------------------------------------------ |  | ---------------------------- | ----- | ---- | - | ------
|                                                       |  | Three months ended March 31,
|(in thousands, except per share amounts)               |  | 2007                         |       | 2006
|Cost of revenues                                       |  | $                            | 1,433 |      | $ | 737   
|Sales and marketing                                    |  |                              | 1,527 |      |   | 1,211 
|General and administrative                             |  |                              | 4,960 |      |   | 7,313 
|Research and development                               |  |                              | 1,031 |      |   | 1,048 
|                                                       |  |                              |       |      |   |       
|Share-based compensation expense before taxes          |  |                              | 8,951 |      |   | 10,309
|Related income tax benefits                            |  |                              | 2,491 |      |   | 2,374 
|                                                       |  |                              |       |      |   |       
|Share-based compensation expense, net of taxes         |  | $                            | 6,460 |      | $ | 7,935 
|                                                       |  |                              |       |      |   |       
|Net share-based compensation expense per common share: |  |                              |       |      |   |       
|Basic                                                  |  | $                            | 0.14  |      | $ | 0.15  
|Diluted                                                |  | $                            | 0.13  |      | $ | 0.14  



8



---

Restricted Stock Units

Restricted stock units represent a right to receive shares of common stock at a future date determined in accordance with the participants award agreement. An exercise price and monetary payment are not required
for receipt of restricted stock units or the shares issued in settlement of the award. Instead, consideration is furnished in the form of the participants services to the Company. Restricted stock units generally vest over three to four years.
Compensation cost for these awards is based on the estimated fair value on the date of grant and recognized as compensation expense on a straight-line basis over the requisite service period. There were no pre-vesting forfeitures estimated for the
three months ended March 31, 2007 and 2006. For the three months ended March 31, 2007 and 2006, the Company recognized $1.0 million and $1.3 million, respectively, in share-based compensation cost related to these restricted stock unit
awards. At March 31, 2007, there was $8.4 million remaining in unrecognized compensation cost related to these awards, which is expected to be recognized over a weighted average period of 2 years.

The weighted average fair value of restricted stock units granted during the three months ended March 31, 2007 and March 31, 2006 was $64.17
and $73.05, respectively.

As of March 31, 2007, there was $13.5 million of total unrecognized compensation cost related to
performance share-based compensation arrangements granted in March 2007. That cost is expected to be recognized over a weighted average period of 3 years. For the three months ended March 31, 2007, the Company recognized $0.4 million in
performance share-based compensation cost.

Restricted Stock Awards

During 2004 and 2003, the Company issued 20,000 and 155,000 shares of restricted stock awards, respectively, with a weighted average grant date fair value
of $72.77 for issuances during 2004 and $49.34 for issuances during 2003 to certain executive officers and key employees. The awards generally vest over four years. Compensation cost for these restricted stock awards is based on the estimated fair
value on the date of grant and recognized as compensation expense on a straight-line basis over the requisite service period. There were no pre-vesting forfeitures estimated for the three months ended March 31, 2007 and 2006. For the three
months ended March 31, 2007 and 2006, the Company recognized $0.4 million and $0.5 million, respectively, in share-based compensation cost related to these restricted stock awards.

Recent Accounting Pronouncements

In February 2007, the Financial Accounting Standards Board
(FASB) issued Statement of Financial Accounting Standards (SFAS) 159,The Fair Value Option for Financial Assets and Financial Liabilities,which allows entities to account for most financial instruments at fair value rather than under other
applicable generally accepted accounting principles (GAAP), such as historical cost. The accounting results in the instrument being marked to fair value every reporting period with the gain/loss from a change in fair value recorded in the
income statement. SFAS 159 is effective as of the beginning of an entitys first fiscal year that begins after November 15, 2007. Early adoption is permitted as of the beginning of the previous fiscal year provided that the
entity makes that choice in the first 120 days of that fiscal year and also elects to apply the provisions of FASB Statement No. 157, Fair Value Measurements.The Company does not believe that the adoption of this statement will have a
material impact on our financial statements.

In September 2006, the Financial Accounting Standards Board (FASB) issued Statement of
Financial Accounting Standards (SFAS) 158, Employers Accounting for Defined Benefit Pension and Other Postretirement Plans, which requires that we recognize the overfunded or underfunded status of our defined benefit and retiree medical
plans (our Plans) as an asset or liability and to recognize as a component of other comprehensive income, including the gain or losses and prior service costs or credits and the transition asset or obligation remaining from the initial application
of SFAS 87, Employers Accounting for Pensions, are adjusted as they are subsequently recognized as components of net periodic benefit cost pursuant to the recognition and amortization provisions of those statements in our 2006 year-end
balance sheet. SFAS 158 also requires us to measure the funded status of our Plans as of our year-end balance sheet date no later than 2008. Aggregated net increase in other comprehensive income due to the adoption of SFAS158 was $5.4 million for
the foreign plans and no impact on the domestic plans as of December 31, 2006.



9



---

In September 2006, the FASB issued SFAS 157, Fair Value Measurements, which defines fair value,
establishes a framework for measuring fair value and expands disclosures about fair value measurements. The provisions of SFAS 157 are effective as of the beginning of our 2008 fiscal year. The Company does not believe that the adoption of this
statement will have a material impact on its financial condition.

In June 2006, the FASB issued Interpretation No. 48 (FIN 48),
Accounting for Uncertainty in Income Taxes, an interpretation of SFAS 109, Accounting for Income Taxes. FIN 48 clarifies the accounting for uncertain tax positions. FIN 48 prescribes a comprehensive model for how companies should
recognize, measure, present and disclose in their financial statements uncertain tax positions taken or expected to be taken on a tax return. Under FIN 48, tax positions shall initially be recognized in the financial statements when it is more
likely than not the position will be sustained upon examination by the tax authorities. Such tax positions shall initially and subsequently be measured as the largest amount of tax benefit that is greater than 50% likely of being realized upon
ultimate settlement with the tax authority, assuming full knowledge of the position and all relevant facts. FIN 48 also revises disclosure requirements to include an annual tabular rollforward of unrecognized tax benefits. The provisions of this
interpretation are required to be adopted for fiscal periods beginning after December 15, 2006. The Company adopted this provision beginning January 1, 2007. Net impact due to the adoption of FIN 48 was $1.4 million decrease to
retained earnings.

Reclassifications

Certain reclassifications of prior year amounts have been made to conform to the current year presentation.



|2. | Composition of Certain Financial Statement Items
|-- | ------------------------------------------------

Investments

Investments consisted of the following:



|                                     |  |                |       |                   |   |       
|------------------------------------ |  | -------------- | ----- | ----------------- | - | ------
|(in thousands)                       |  | March 31, 2007 |       | December 31, 2006
|                                     |  | (Unaudited)    |       |                  
|Short-term                           |  |                |       |                   |   |       
|U.S. Treasury and Agency obligations |  | $              |      |                   | $ | 8,914 
|                                     |  |                |       |                   |   |       
|Total short-term investments         |  |                |      |                   |   | 8,914 
|Long-term                            |  |                |       |                   |   |       
|Equity securities                    |  |                | 2,850 |                   |   | 2,850 
|                                     |  |                |       |                   |   |       
|Total long-term investments          |  |                | 2,850 |                   |   | 2,850 
|                                     |  |                |       |                   |   |       
|Total investments                    |  | $              | 2,850 |                   | $ | 11,764
|                                     |  |                |       |                   |   |       

Inventories

Inventories consisted of the following:



|                                                                       |  |                |         |                   |   |        
|---------------------------------------------------------------------- |  | -------------- | ------- | ----------------- | - | -------
|                                                                       |  | March 31, 2007 |         | December 31, 2006
|(in thousands)                                                         |  | (Unaudited)    |         |                  
|Raw materials and components                                           |  | $              | 27,132  |                   | $ | 27,003 
|Work in process (materials, labor and overhead)                        |  |                | 26,197  |                   |   | 23,536 
|Finished goods (materials, labor and overhead)                         |  |                | 99,599  |                   |   | 95,735 
|Adjustment to write up acquired finished goods inventory to fair value |  |                |        |                   |   | 126    
|                                                                       |  |                |         |                   |   |        
|Total inventories                                                      |  | $              | 152,928 |                   | $ | 146,400
|                                                                       |  |                |         |                   |   |        



10



---

Property and Equipment

Property and equipment consisted of the following:



|                                          |  |                      |  |                |          |   |                   |   |          |  
|----------------------------------------- |  | -------------------- |  | -------------- | -------- | - | ----------------- | - | -------- | -
|                                          |  | Estimateduseful life |  | March 31, 2007 |          |   | December 31, 2006 |  
|(in thousands)                            |  | (in years)           |  | (Unaudited)    |          |   |                   |  
|Land                                      |  |                     |  | $              | 19,496   |   |                   | $ | 18,956   |  
|Building and improvements                 |  | 1-50                 |  |                | 168,682  |   |                   |   | 168,323  |  
|Machinery and equipment                   |  | 1-10                 |  |                | 144,824  |   |                   |   | 148,051  |  
|Internal use software                     |  | 1-10                 |  |                | 69,876   |   |                   |   | 58,597   |  
|Construction in process                   |  |                     |  |                | 37,728   |   |                   |   | 37,757   |  
|                                          |  |                      |  |                |          |   |                   |   |          |  
|Total property and equipment              |  |                      |  |                | 440,606  |   |                   |   | 431,684  |  
|Accumulated depreciation and amortization |  |                      |  |                | (165,622 | ) |                   |   | (156,265 | )
|                                          |  |                      |  |                |          |   |                   |   |          |  
|Total property and equipment, net         |  |                      |  | $              | 274,984  |   |                   | $ | 275,419  |  
|                                          |  |                      |  |                |          |   |                   |   |          |  

Goodwill and Other Intangible Assets

The $7.9 million increase in goodwill on the consolidated balance sheets from December 31, 2006 to March 31, 2007 was the result of a
$8.7 million in foreign currency translation and $0.3 million in adjustments for prior year acquisitions, offset by a $1.1 million decrease due to the application of FIN 48 to tax provisions taken in certain preacquisition tax returns. The
adjustments were primarily related to tax, the sale of BioSource Europe, S.A. and additional reserves related to the termination of certain employees.

Intangible assets consisted of the following:



|                                               |  |                      |  |                     |                   |                         |   |          |                      |  |                     |  |                         |         |  |   |          |  
|---------------------------------------------- |  | -------------------- |  | ------------------- | ----------------- | ----------------------- | - | -------- | -------------------- |  | ------------------- |  | ----------------------- | ------- |  | - | -------- | -
|                                               |  | March 31, 2007       |  |                     | December 31, 2006 |                        
|                                               |  | Weightedaverage Life |  | Grosscarryingamount |                   | Accumulatedamortization |   |          | Weightedaverage Life |  | Grosscarryingamount |  | Accumulatedamortization |        
|(in thousands)                                 |  |                      |  | (Unaudited)         |                   |                         |   |          |                      |  |                     |  |                         |        
|Amortized intangible assets:                   |  |                      |  |                     |                   |                         |   |          |                      |  |                     |  |                         |         |  |   |          |  
|Purchased technology                           |  | 7 years              |  | $                   | 760,705           |                         | $ | (499,513 | )                    |  | 7 years             |  | $                       | 758,748 |  | $ | (477,719 | )
|Purchased tradenames and trademarks            |  | 7 years              |  |                     | 79,385            |                         |   | (46,785  | )                    |  | 7 years             |  |                         | 78,273  |  |   | (45,327  | )
|Purchased customer base                        |  | 12 years             |  |                     | 47,886            |                         |   | (23,576  | )                    |  | 12 years            |  |                         | 46,950  |  |   | (19,896  | )
|Other intellectual properties                  |  | 6 years              |  |                     | 42,860            |                         |   | (22,825  | )                    |  | 6 years             |  |                         | 44,590  |  |   | (21,365  | )
|                                               |  |                      |  |                     |                   |                         |   |          |                      |  |                     |  |                         |         |  |   |          |  
|Total intangible assets                        |  |                      |  | $                   | 930,836           |                         | $ | (592,699 | )                    |  |                     |  | $                       | 928,561 |  | $ | (564,307 | )
|                                               |  |                      |  |                     |                   |                         |   |          |                      |  |                     |  |                         |         |  |   |          |  
|Intangible assets not subject to amortization: |  |                      |  |                     |                   |                         |   |          |                      |  |                     |  |                         |         |  |   |          |  
|Purchased tradenames and trademarks            |  |                      |  | $                   | 7,451             |                         |   |          |                      |  |                     |  | $                       | 7,451   |  |   |          |  
|                                               |  |                      |  |                     |                   |                         |   |          |                      |  |                     |  |                         |         |  |   |          |  

Amortization expense related to intangible assets for the three months ended March 31, 2007
and 2006 was $29.8 million and $28.0 million, respectively. Estimated aggregate amortization expense is expected to be $44.4 million for the remainder of fiscal year 2007. Estimated aggregate amortization expense for fiscal years 2008, 2009, 2010
and 2011 is $57.0 million, $57.0 million, $52.2 million and $45.2 million, respectively.

Comprehensive Income

Total comprehensive income consisted of the following:



|                                                                           |  |                              |        |      |   |        |  
|-------------------------------------------------------------------------- |  | ---------------------------- | ------ | ---- | - | ------ | -
|(in thousands, unaudited)                                                  |  | Three months ended March 31, |       
|                                                                           |  | 2007                         |        | 2006 |  
|Net income, as reported                                                    |  | $                            | 30,266 |      | $ | 19,218 |  
|Unrealized gain (loss) on investments, net of related tax effects          |  |                              | 291    |      |   | 1,167  |  
|Unrealized gain (loss) on hedging transactions, net of related tax effects |  |                              |       |      |   | (215   | )
|Minimum pension liability adjustment, net of related tax effects           |  |                              |       |      |   |       |  
|Foreign currency translation adjustment                                    |  |                              | 14,733 |      |   | 6,324  |  
|                                                                           |  |                              |        |      |   |        |  
|Total comprehensive income                                                 |  | $                            | 45,290 |      | $ | 26,494 |  
|                                                                           |  |                              |        |      |   |        |  



11



---

|3. | Discontinued Operations
|-- | -----------------------

In the first quarter of
2007, our Board of Directors approved a plan to sell the BioReliance subsidiary, a contract service organization which provides biological safety testing, toxicology, viral manufacturing, and laboratory animal diagnostic services and is a part of
our Cell Culture Systems segment. On February 13, 2007 we reached a definitive agreement to sell our BioReliance business unit to Avista Capital Partners for approximately $210.0 million. In 2006, BioReliance generated $105.0 million in annual
revenue. In April 2007, we completed the sale of BioReliance and received net cash proceeds of approximately $209.0 million.

Additionally, we finalized the sale of BioSource Europe, S.A., a diagnostic business located in Belgium, on February 1, 2007 to a private investor group in Belgium.

We have reclassified the consolidated financial statements for all periods presented to reflect BioReliance and BioSource Europe, S.A. as
discontinued operations as these businesses meet the criteria as a component of an entity under SFAS No. 144, Accounting for the Impairment or Disposal of Long-Lived Assets. Accordingly, any operating results of these businesses are
presented in the Companys Consolidated Statements of Operations as discontinued operations, net of income tax, and all prior periods have been reclassified. The components of discontinued operations for the periods presented are as follows:



|                                                                   |  |                              |        |   |      |   |        |  
|------------------------------------------------------------------ |  | ---------------------------- | ------ | - | ---- | - | ------ | -
|                                                                   |  | Three months ended March 31, |       
|(in thousands)                                                     |  | 2007                         |        |   | 2006 |  
|Net revenues                                                       |  | $                            | 26,429 |   |      | $ | 28,963 |  
|Cost of revenues                                                   |  |                              | 19,059 |   |      |   | 19,176 |  
|                                                                   |  |                              |        |   |      |   |        |  
|Gross profit                                                       |  |                              | 7,370  |   |      |   | 9,787  |  
|Operating expenses                                                 |  |                              | 6,756  |   |      |   | 8,482  |  
|Non-operating expenses                                             |  |                              | 1,913  |   |      |   | (7     | )
|                                                                   |  |                              |        |   |      |   |        |  
|Net (loss) income from discontinued operations before income taxes |  |                              | (1,299 | ) |      |   | 1,312  |  
|Income tax benefit (expense)                                       |  |                              | 1,673  |   |      |   | (399   | )
|                                                                   |  |                              |        |   |      |   |        |  
|Net income from discontinued operations                            |  | $                            | 374    |   |      | $ | 913    |  
|                                                                   |  |                              |        |   |      |   |        |  



|4. | Business Combinations
|-- | ---------------------

The Company continues to
integrate recent acquisitions into its operations and recorded approximately $1.8 million and $2.1 million for the three months ended March 31, 2007 and 2006, respectively, related to these efforts. These expenses relate primarily to the
severance and other costs associated with consolidation.



|5. | Segment Information
|-- | -------------------

The Company has two reportable
segments: BioDiscovery and Cell Culture Systems.

The BioDiscovery product segment includes functional genomics, cell biology and drug
discovery product lines. Functional genomics encompasses products from the initial cloning and manipulation of DNA, to examining RNA levels and regulating gene expression in cells, to capturing, separating and analyzing proteins. These include the
research tools used in reagent and kit form that simplify and improve gene acquisition, gene cloning, gene expression and gene analysis techniques. This segment also includes a full range of enzymes, nucleic acids, other biochemicals and reagents.
The Company also offers software that enables the analysis and interpretation of genomic, proteomic and other biomolecular data for application in pharmaceutical, therapeutic and diagnostic development.

The Cell Culture Systems (CCS) product segment includes all of our cell culture products and services business. Products include sera, growth factors,
cell and tissue culture media used in both life sciences research and to produce pharmaceuticals and other materials made through cultured cells. CCS services include the creation of commercially viable stable cell lines and the optimization of
production processes used for the production of therapeutic drugs.

The Company does not have intersegment revenues that are material to
the overall consolidated financial statements. In addition, the Company does not currently segregate assets by segment as a majority of the Companys total assets are shared or considered non-segment assets. As a result, the Company has
determined it is not useful to assign its shared assets to individual segments.



12



---

Segment information was as follows:



|                                                                  |  |              |         |                     |   |                              |  |       |          |  |   |        
|----------------------------------------------------------------- |  | ------------ | ------- | ------------------- | - | ---------------------------- |  | ----- | -------- |  | - | -------
|(dollars in thousands)                                            |  | BioDiscovery |         | Cell CultureSystems |   | Corporate and Unallocated(1) |  | Total
|Three Months Ended March 31, 2007                                 |  |              |         |                     |   |                              |  |      
|Revenues from external customers                                  |  | $            | 220,067 |                     | $ | 88,586                       |  | $     |         |  | $ | 308,653
|                                                                  |  |              |         |                     |   |                              |  |       |          |  |   |        
|Gross profit                                                      |  |              | 158,774 |                     |   | 41,579                       |  |       | (1,433)  |  |   | 198,920
|                                                                  |  |              |         |                     |   |                              |  |       |          |  |   |        
|Gross margin                                                      |  |              | 72%     |                     |   | 47%                          |  |       |          |  |   | 64%    
|Selling and administrative                                        |  |              | 68,272  |                     |   | 22,977                       |  |       | 6,487    |  |   | 97,736 
|Research and development                                          |  |              | 23,391  |                     |   | 3,023                        |  |       | 1,031    |  |   | 27,445 
|Purchased intangibles amortization and business integration costs |  |              |        |                     |   |                             |  |       | 29,384   |  |   | 29,384 
|                                                                  |  |              |         |                     |   |                              |  |       |          |  |   |        
|Operating income (loss)                                           |  | $            | 67,111  |                     | $ | 15,579                       |  | $     | (38,335) |  | $ | 44,355 
|                                                                  |  |              |         |                     |   |                              |  |       |          |  |   |        
|Operating margin                                                  |  |              | 30%     |                     |   | 18%                          |  |       |          |  |   | 14%    
|                                                                  |  |              |         |                    
|Three Months Ended March 31, 2006                                 |  |              |         |                     |   |                              |  |      
|Revenues from external customers                                  |  | $            | 201,763 |                     | $ | 78,278                       |  | $     |         |  | $ | 280,041
|                                                                  |  |              |         |                     |   |                              |  |       |          |  |   |        
|Gross profit                                                      |  |              | 140,484 |                     |   | 41,966                       |  |       | (2,583)  |  |   | 179,867
|                                                                  |  |              |         |                     |   |                              |  |       |          |  |   |        
|Gross margin                                                      |  |              | 70%     |                     |   | 54%                          |  |       |          |  |   | 64%    
|Selling and administrative                                        |  |              | 64,697  |                     |   | 21,017                       |  |       | 8,524    |  |   | 94,238 
|Research and development                                          |  |              | 24,027  |                     |   | 2,653                        |  |       | 1,048    |  |   | 27,728 
|Purchased intangibles amortization and business integration costs |  |              |        |                     |   |                             |  |       | 30,144   |  |   | 30,144 
|                                                                  |  |              |         |                     |   |                              |  |       |          |  |   |        
|Operating income (loss)                                           |  | $            | 51,760  |                     | $ | 18,296                       |  | $     | (42,299) |  | $ | 27,757 
|                                                                  |  |              |         |                     |   |                              |  |       |          |  |   |        
|Operating margin                                                  |  |              | 26%     |                     |   | 23%                          |  |       |          |  |   | 10%    



|(1) | Unallocated items for the three months ended March 31, 2007 and 2006 include noncash charges for
purchase accounting inventory revaluations of zero and $1.8 million, amortization of purchased intangibles of $27.6 million and $28.0 million, amortization of deferred compensation of zero and $0.2 million, business consolidation costs of $1.8
million and $2.1 million, and expenses related to share-based payments as a result of the adoption of Statement of Financial Accounting Standards No. 123 (revised 2004), Share-Based Payments, of $8.9 million and $10.1 million,
respectively. These items are not allocated by management for purposes of analyzing the operations since they are principally non-cash or other costs resulting primarily from business restructuring or purchase accounting that are separate from
ongoing operations.
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|6. | Long-Term Debt
|-- | --------------

Long-term debt consisted of the
following:



|                                                    |  |                |           |   |                   |   |           |  
|--------------------------------------------------- |  | -------------- | --------- | - | ----------------- | - | --------- | -
|(in thousands)                                      |  | March 31, 2007 |           |   | December 31, 2006 |  
|                                                    |  | (Unaudited)    |           |   |                   |  
|31/4%
Convertible Senior Notes (principal due 2025) |  | $              | 350,000   |   |                   | $ | 350,000   |  
|11/2%
Convertible Senior Notes (principal due 2024) |  |                | 450,000   |   |                   |   | 450,000   |  
|2% Convertible Senior Notes (principal due 2023)    |  |                | 350,000   |   |                   |   | 350,000   |  
|Capital leases                                      |  |                | 25        |   |                   |   |          |  
|Other                                               |  |                | 1,243     |   |                   |   | 2,785     |  
|                                                    |  |                |           |   |                   |   |           |  
|Total debt                                          |  |                | 1,151,268 |   |                   |   | 1,152,785 |  
|Less current portion                                |  |                | (558      | ) |                   |   | (1,961    | )
|                                                    |  |                |           |   |                   |   |           |  
|Total long-term debt                                |  | $              | 1,150,710 |   |                   | $ | 1,150,824 |  
|                                                    |  |                |           |   |                   |   |           |  





|7. | Lines of Credit
|-- | ---------------

On January 9, 2006, the
Company entered into a syndicated $250.0 million senior secured credit facility (the Credit Facility) with Bank of America, N.A. Interest rates on outstanding borrowings are determined by reference to LIBOR or to an alternate base rate, with margins
determined based on changes in the Companys leverage ratio. Under the terms of the Credit Facility, the Company may request that the aggregate amount available be increased by $100.0 million of additional financing, subject to certain
conditions having been met, including the availability of additional lender commitments. The Credit Facility contains various representations, warranties and affirmative, negative and financial covenants and conditions of default customary for
financings of this type. The Company currently anticipates using the proceeds of the Credit Facility for the purpose of general working capital, capital expenditures, acquisitions and/or other capital needs as they may arise. The Credit Facility
will terminate and all amounts outstanding under it will be due and payable in full on January 6, 2011. As of March 31, 2007, the available credit is $239.9 million as the Company has issued $10.1 million in letters of credit through the
facility.



13



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At March 31, 2007, the Companys foreign subsidiaries in Brazil, China, Japan, New Zealand and
Norway had available bank lines of credit denominated in local currency to meet short-term working capital requirements. The credit facilities bear interest at a fixed rate, the Norwegian NIBOR rate, the Japan TIBOR, the Peoples Bank of China
rate and Mizhuho prime rate. The weighted average interest rate of these lines of credit was 4.78% at March 31, 2007. Under these lines of credit, the U.S. dollar equivalent of these facilities totaled $18.1 million, none of which was
outstanding at March 31, 2007. There were no parent company guarantees associated with these facilities.



|8. | Commitments and Contingencies
|-- | -----------------------------

Letters of Credit

The Company had outstanding letters of credit totaling $10.1 million at March 31, 2007, of which $5.1 million was to support
liabilities associated with the Companys self-insured workers compensation programs and $5.0 million was to support its building lease requirements. These liabilities are reflected in other current liabilities and long-term deferred
credits and reserves in the Consolidated Balance Sheets at March 31, 2007.

Executive Employment Agreements

The Company has employment contracts with key executives that provide for the continuation of salary if terminated for reasons other than cause, as
defined in those agreements. At March 31, 2007, future employment contract commitments for such key executives were approximately $15.9 million for the remainder of fiscal year 2007.

Contingent Acquisition Obligations

Pursuant
to the purchase agreements for certain prior year acquisitions, the Company could be required to make additional contingent cash payments based on the achievement of certain operating results of the acquired companies. Payments aggregating a maximum
of $53.5 million based upon certain percentages of future gross sales of the acquired companies could be required through 2007. Additional payments of $9.0 million could be required of the Company based upon the achievement of certain development
milestones through 2008. For the three months ended March 31, 2007, no contingent payments have been earned or paid for research and development milestones or for the achievement of operating results to date.

In addition, the purchase agreement for one of the prior year acquisitions may require the Company to make additional contingent cash payments based on
percentages of future gross sales of the acquired company through 2009. The purchase agreement does not limit the payment to a maximum amount. The Company will account for any such contingent payments as an addition to the purchase price of the
acquired company. No contingent payments have been earned as of March 31, 2007.

Environmental Liabilities

The Company assumed certain environmental exposures as a result of the merger with Dexter Corporation in 2000 and recorded reserves to cover estimated
environmental clean-up costs. The environmental reserves, which are not discounted, were $7.3 million at March 31, 2007, and include current reserves of $0.8 million, which are estimated to be paid during this fiscal year, and long-term
reserves of $6.5 million. In addition, the Company has an insurance policy to cover these assumed environmental exposures. Based upon currently available information, the Company believes that it has adequately provided for these environmental
exposures and that the outcome of these matters will not have a material adverse effect on its consolidated results of operations.

Intellectual
Properties

The Company is involved in various claims and legal proceedings of a nature considered normal to its business, including
protection of its owned and licensed intellectual property. The Company accrues for such contingencies when it is probable that a liability is incurred and the amount can be reasonably estimated. These accruals are adjusted periodically as
assessments change or additional information becomes available. Specific royalty liabilities related to acquired businesses have been recorded on the consolidated financial statements at March 31, 2007.



14



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Litigation

The Company is subject to potential liabilities under government regulations and various claims and legal actions that are pending or may be asserted. These matters have arisen in the ordinary course and conduct of
the Companys business, as well as through acquisitions, and some are expected to be covered, at least partly, by insurance. Claim estimates that are probable and can be reasonably estimated are reflected as liabilities of the Company. The
ultimate resolution of these matters is subject to many uncertainties. It is reasonably possible that some of the matters that are pending or may be asserted could be decided unfavorably to the Company. Although the amount of liability at
March 31, 2007 with respect to these matters cannot be ascertained, the Company believes that any resulting liability should not materially affect its consolidated financial statements.



|9. | Pension Plans and Postretirement Health and Benefit Program
|-- | -----------------------------------------------------------

The Company has several defined benefit pension plans covering its U.S. employees and employees in several foreign countries.

The
components of net periodic pension cost for the Companys pension plans and postretirement health and benefit program for the three months ended March 31, 2007 and 2006 were as follows:



|                                   |  |                |       |   |      |   |       |  
|---------------------------------- |  | -------------- | ----- | - | ---- | - | ----- | -
|                                   |  | Domestic Plans |      
|(in thousands)                     |  | 2007           |       |   | 2006 |  
|Service cost                       |  | $              | 20    |   |      | $ | 20    |  
|Interest cost                      |  |                | 834   |   |      |   | 821   |  
|Expected return on plan assets     |  |                | (947  | ) |      |   | (894  | )
|Amortization of prior service cost |  |                | 60    |   |      |   | 60    |  
|Amortization of actuarial loss     |  |                | 376   |   |      |   | 430   |  
|                                   |  |                |       |   |      |   |       |  
|Net periodic pension cost          |  | $              | 343   |   |      | $ | 437   |  
|                                   |  |                |       |   |      |   |       |  
|                                   | 
|                                   |  | Foreign Plans  |      
|(in thousands)                     |  | 2007           |       |   | 2006 |  
|Service cost                       |  | $              | 1,142 |   |      | $ | 1,197 |  
|Interest cost                      |  |                | 806   |   |      |   | 680   |  
|Expected return on plan assets     |  |                | (647  | ) |      |   | (604  | )
|Amortization of actuarial loss     |  |                | 146   |   |      |   | 148   |  
|                                   |  |                |       |   |      |   |       |  
|Net periodic pension cost          |  | $              | 1,447 |   |      | $ | 1,421 |  
|                                   |  |                |       |   |      |   |       |  



|10. | Income Taxes
|--- | ------------

Effective January 1, 2007, we
adopted FASB Interpretation No. 48, Accounting for Uncertainty in Income Taxes (FIN 48). FIN 48 prescribes a more-likely-than-not threshold for financial statement recognition and measurement of a tax position taken or expected to be taken in a
tax return. This interpretation also provides guidance on derecognition of income tax assets and liabilities, classification of current and deferred income tax assets and liabilities, accounting for interest and penalties associated with tax
positions, accounting for income taxes in interim periods and income tax disclosures.

As of March 31 and January 1, 2007, the
total amount of gross unrecognized tax benefits was $25.5 million and $25.2 million, of which $18.3 million and $17.6 million would reduce our income tax expense and effective tax rate, if recognized. The cumulative effects of applying this
interpretation have been recorded as a decrease of $1.4 million to Retained earnings, an increase of $2.7 million to net deferred income tax assets, a decrease to goodwill of $1.1 million and an increase of $3.1 million to income taxes payable.

In conjunction with the adoption of FIN 48, we have classified uncertain tax positions as non-current income tax liabilities unless
expected to be paid in one year. The Companys continuing practice is to recognize interest and/or penalties related to income tax matters in income tax expense. As of March 31 and January 1, 2007, the total amount of accrued income
tax-related interest and penalties included in the Condensed Consolidated Statement of Financial Position was $2.1 million and $1.8 million.



15



---

The Company is subject to routine compliance reviews on various tax matters around the world in the
ordinary course of business. Currently, audits are occurring in the United States, New Zealand, United Kingdom, Norway, and various other tax jurisdictions. The U.S. audit cycle is for our consolidated income tax returns for 2004 and is expected to
be completed in 2008. After the 2004 IRS audit cycle, the remaining years subject to IRS examinations are 2005 and 2006.

During 2007,
global audit resolutions could potentially reduce our unrecognized tax benefits by as much as $1.9 million, either because our tax positions are sustained or because we agree to the audit disallowance, depending on the outcomes of ongoing
examinations.

Income taxes are determined using an estimated annual effective tax rate. The provision for income taxes is less than the
35% U.S. federal statutory rate due primarily to lower tax rates in certain non-U.S. jurisdictions, export and domestic production incentives, research and development tax credits available from various jurisdictions, net of state
income taxes and the effect of certain non-deductible expenses and other adjustments.



|11. | Stock Repurchase Program
|--- | ------------------------

In August 2006, the
Companys Board of Directors authorized a $500 million share repurchase program of the Companys common stock. During the three months ended March 31, 2007, the Company repurchased 1.5 million shares at a total cost of
approximately $99.7 million. The cost of repurchased shares are included in treasury stock and reported as a reduction in stockholders equity.



16



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|ITEM 2. | Managements Discussion and Analysis of Financial Condition and Results of Operations
|------- | -------------------------------------------------------------------------------------

The following discussion and analysis of financial condition and results of operations should be read in conjunction with the Unaudited Consolidated
Financial Statements and Notes thereto included elsewhere in this report and the Consolidated Financial Statements and Notes thereto included in our annual report on Form 10-K.

Forward-looking Statements

Any statements in this Quarterly Report on Form 10-Q about our
expectations, beliefs, plans, objectives, prospects, financial condition, assumptions or future events or performance are not historical facts and are forward-looking statements as that term is defined under the Federal Securities Laws.
These statements are often, but not always, made through the use of words or phrases such as believe, anticipate, should, intend, plan, will, expects,
estimates, projects, positioned, strategy, outlook, and similar words. You should read statements that contain these types of words carefully. Such forward-looking statements are subject to
a number of risks, uncertainties and other factors that could cause actual results to differ materially from what is expressed or implied in such forward-looking statements. There may be events in the future that we are not able to predict
accurately or over which we have no control. Potential risks and uncertainties include, but are not limited to, those discussed below under Risk Factors That May Affect Future Results and elsewhere in this Quarterly Report as well as
other risks and uncertainties detailed in our Annual Report on Form 10-K, filed with the Securities and Exchange Commission on March 1, 2007. We do not undertake any obligation to release publicly any revisions to such forward-looking
statements to reflect events or uncertainties after the date hereof or to reflect the occurrence of unanticipated events.

OVERVIEW

Revenues for the three months ended March 31, 2007 were $308.7 million, with income from continuing operations of $29.9 million, and net income of
$30.3 million.

Our Business and Operating Segments

We are a leading developer, manufacturer and marketer of research tools in reagent, kit and high throughput application forms to customers engaged in life sciences research, drug discovery, diagnostics and the
commercial manufacture of biological products. Additionally we are a leading supplier of sera, cell and tissue culture media and reagents used in life sciences research, as well as in processes to grow cells in the laboratory and produce
pharmaceuticals and other high valued proteins.

We conduct our business through two principal segments:



| | Ø |  | BioDiscovery.Our BioDiscovery segment includes products used in functional genomics, cell biology and drug discovery product lines. Functional genomics
encompasses products from the initial cloning and manipulation of DNA, to examining RNA levels and regulating gene expression in cells, to capturing, separating and analyzing proteins. These include the research tools used in reagent and kit form
that simplify and improve gene acquisition, gene cloning, gene expression and gene analysis techniques. This segment also includes a full range of enzymes, nucleic acids, other biochemicals and reagents. These biologics are manufactured to the
highest research standards and are matched in a gene specific, validated manner (gene, ORF, RNAi, protein, antibodies, etc.) to ensure researchers the highest purity and scientific relevance for their experimentation. We also offer software through
this segment that enables more efficient, accelerated analysis and interpretation of genomic, proteomic and other biomolecular data for application in pharmaceutical, therapeutic and diagnostic development. The acquisitions of Zymed, Caltag, Dynal
and Biosource will enhance our ability to offer new technology and products, such as antibodies and proteins (Zymed, Caltag and BioSource) and magnetic beads used for biological separation (Dynal), which is the first step in almost every biologic
investigative or diagnostic process.
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | Ø |  | Cell Culture Systems (CCS).Our CCS segment includes all of our GIBCO cell culture products and services. Products include sera, cell and tissue culture
media, reagents used in both life sciences research and in processes to grow cells in the laboratory and to produce pharmaceuticals and other materials made through cultured cells. CCS services include the creation of commercially viable stable cell
lines and the optimization of production processes used for the production of therapeutic drugs.
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

The principal markets
for our products include the life sciences research market and the biopharmaceutical production market. The life sciences research market consists of laboratories generally associated with universities, medical research centers, government
institutions and other research institutions as well as biotechnology, pharmaceutical, energy, agricultural and chemical companies. Life sciences researchers use our reagents and informatics to perform a broad range of experiments in the laboratory.



17



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The biopharmaceutical production market consists of biotechnology and pharmaceutical companies that use
sera and media for the production of clinical and commercial quantities of biopharmaceuticals. The selection of sera and media generally occurs early in the clinical process and continues through commercialization. Other industries consume sera and
media for the commercial production of genetically engineered products including food processing and agricultural industries.

CRITICAL ACCOUNTING
POLICIES

There were no significant changes in critical accounting policies from those at December 31, 2006. For additional
information on the recent accounting pronouncements impacting our business, see Note 1 of the Notes to Consolidated Financial Statements included in Item 1.

Discontinued Operations

In the first quarter of 2007, our Board of Directors approved a plan to sell the BioReliance
subsidiary, a contract service organization which provides biological safety testing, toxicology, viral manufacturing, and laboratory animal diagnostic services and is a part of our Cell Culture Systems segment. On February 13, 2007, we reached
a definitive agreement to sell our BioReliance business unit to Avista Capital Partners for approximately $210.0 million. In 2006, BioReliance generated $105.0 million in annual revenue. In April 2007, we completed the sale of BioReliance and
received net cash proceeds of approximately $209.0 million.

Additionally, we finalized the sale of BioSource Europe, S.A., a
diagnostic business located in Belgium, on February 1, 2007 to a private investor group in Belgium.

RESULTS OF OPERATIONS

First Quarter of 2007 Compared to First Quarter of 2006

The following table compares revenues and gross margin by segment for the first quarter of 2007 and 2006:



|                                  |  |                              |       |   |      |   |       |          |  |            |      |  |    |  
|--------------------------------- |  | ---------------------------- | ----- | - | ---- | - | ----- | -------- |  | ---------- | ---- |  | -- | -
|                                  |  | Three months ended March 31, |       |   |      |   |       |         
|(in millions)(unaudited)          |  | 2007                         |       |   | 2006 |   |       | Increase |  | % Increase |     
|BioDiscovery revenues             |  | $                            | 220.1 |   |      | $ | 201.8 |          |  | $          | 18.3 |  | 9  | %
|Cell Culture Systems revenues     |  |                              | 88.6  |   |      |   | 78.2  |          |  |            | 10.4 |  | 13 | %
|                                  |  |                              |       |   |      |   |       |          |  |            |      |  |    |  
|Total revenues                    |  | $                            | 308.7 |   |      | $ | 280.0 |          |  | $          | 28.7 |  | 10 | %
|                                  |  |                              |       |   |      |   |       |          |  |            |      |  |    |  
|BioDiscovery gross margin         |  |                              | 72    | % |      |   | 70    | %        |  |            |      |  |    |  
|Cell Culture Systems gross margin |  |                              | 47    | % |      |   | 54    | %        |  |            |      |  |    |  
|Total gross margin                |  |                              | 64    | % |      |   | 64    | %        |  |            |      |  |    |  

Revenues

Revenues increased by $28.7 million or 10% for the first quarter of 2007 compared to the first quarter of 2006. Foreign currency translation increased revenues by $8.1 million or 3%. The remaining $20.6 million or 7%
of growth was primarily due to increased volume and price of $17.6 million and increased royalty revenue of $3.0 million.

Gross Profit

Gross profit increased $19.1 million or 11% in the first quarter of 2007 compared to the first quarter of 2006. The increase in
gross profit was driven by $10.3 million in increased volume and pricing, $5.1 million in reduced costs, $4.1 million in favorable currency translation and $1.7 million from royalty related items, partially offset by an increase in the mix of lower
margin product. Included in gross margin for the first quarter 2006 was approximately $2.2 million of costs associated with the write-up of acquired inventory to fair market value as a result of a business combination. In accordance with purchase
accounting rules, this acquired inventory was written-up to fair market value and subsequently expensed as the inventory was sold. The impact of this inventory revaluation decreased our overall gross margin by less than one percentage point in the
first quarter of 2006.



18



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Operating Expenses

The following table compares operating expenses by segment for the first quarter of 2007 and 2006:



|                           |  |                              |      |                                  |      |   |                  |   |                                  |  |    |                      |  |   |                      |   |  |    |   
|-------------------------- |  | ---------------------------- | ---- | -------------------------------- | ---- | - | ---------------- | - | -------------------------------- |  | -- | -------------------- |  | - | -------------------- | - |  | -- | --
|                           |  | Three months ended March 31, |      |                                  |      |   |                  |   |                                 
|                           |  | 2007                         |      |                                  | 2006 |   |                  |   |                                  |  |    |                     
|(in millions) (unaudited)  |  | Operatingexpense             |      | As apercentage ofsegmentrevenues |      |   | Operatingexpense |   | As apercentage ofsegmentrevenues |  |    | $ Increase(decrease) |  |   | % Increase(decrease) |  
|BioDiscovery segment:      |  |                              |      |                                  |      |   |                  |   |                                  |  |    |                      |  |   |                      |   |  |    |   
|Sales and marketing        |  | $                            | 42.3 |                                  | 19   | % |                  | $ | 42.6                             |  | 21 | %                    |  | $ | (0.3                 | ) |  | (1 | %)
|General and administrative |  |                              | 26.0 |                                  | 12   | % |                  |   | 22.1                             |  | 11 | %                    |  |   | 3.9                  |   |  | 18 | % 
|Research and development   |  |                              | 23.4 |                                  | 11   | % |                  |   | 24.0                             |  | 12 | %                    |  |   | (0.6                 | ) |  | (3 | %)
|CCS segment:               |  |                              |      |                                  |      |   |                  |   |                                  |  |    |                      |  |   |                      |   |  |    |   
|Sales and marketing        |  | $                            | 13.4 |                                  | 15   | % |                  | $ | 13.5                             |  | 17 | %                    |  | $ | (0.1                 | ) |  | (1 | %)
|General and administrative |  |                              | 9.5  |                                  | 11   | % |                  |   | 7.5                              |  | 10 | %                    |  |   | 2.0                  |   |  | 27 | % 
|Research and development   |  |                              | 3.0  |                                  | 3    | % |                  |   | 2.7                              |  | 3  | %                    |  |   | 0.3                  |   |  | 11 | % 
|Unallocated(1):            |  |                              |      |                                  |      |   |                  |   |                                  |  |    |                      |  |   |                      |   |  |    |   
|Sales and marketing        |  | $                            | 1.5  |                                  |      |   |                  | $ | 1.2                              |  |    |                      |  | $ | 0.3                  |   |  |    |   
|General and administrative |  |                              | 5.0  |                                  |      |   |                  |   | 7.3                              |  |    |                      |  |   | (2.3                 | ) |  |    |   
|Research and development   |  |                              | 1.0  |                                  |      |   |                  |   | 1.0                              |  |    |                      |  |   |                     |   |  |    |   
|Consolidated:              |  |                              |      |                                  |      |   |                  |   |                                  |  |    |                      |  |   |                      |   |  |    |   
|Sales and marketing        |  | $                            | 57.2 |                                  | 19   | % |                  | $ | 57.3                             |  | 20 | %                    |  | $ | (0.1                 | ) |  |   |   
|General and administrative |  |                              | 40.5 |                                  | 13   | % |                  |   | 36.9                             |  | 13 | %                    |  |   | 3.6                  |   |  | 10 | % 
|Research and development   |  |                              | 27.4 |                                  | 9    | % |                  |   | 27.7                             |  | 10 | %                    |  |   | (0.3                 | ) |  | (1 | %)



|(1) | Consists primarily of shared-based compensation expense associated with the adoption of SFAS 123R. See
Note 1 of the Consolidated Financial Statements for additional information.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Sales and Marketing.
For the first quarter of 2007, sales and marketing expenses decreased $0.1 million compared to the first quarter of 2006. This decrease was driven by a decrease of $1.8 million in travel and entertainment expenses, a $0.3 million decrease in all
other expenses and an increase of $2.0 million in compensation and benefits.

General and Administrative. For the
first quarter of 2007, general and administrative expenses increased $3.6 million or 10% compared to the first quarter of 2006. This increase was driven by a $2.7 million increase in compensation and benefits, a $1.6 million increase in outside
services and a $1.0 million increase in bad debt expense, partially offset by a decrease in stock-based compensation.

Research and
Development. Research and development expenses for the first quarter of 2007 decreased $0.3 million or 1% compared to the first quarter of 2006. This decrease is driven by a $1.7 million decrease in compensation and benefits,
partially offset by a $1.2 million increase in outside services.

Purchased Intangibles Amortization. Amortization
expense related to purchased intangible assets acquired in our business combinations was $27.6 million for the first quarter of 2007 compared to $28.0 million for the first quarter of 2006.

Business Consolidation Costs. Business consolidation costs for the three months ended March 31, 2007 were $1.8 million compared
to $2.1 million in the first quarter of 2006. These costs are associated with our efforts to realign our business and consolidation of certain facilities. We expect to continue to incur business consolidation costs in 2007 as we further consolidate
operations and facilities.

Interest Income. Interest income was $4.0 million for the first quarter of 2007 compared
to $6.5 million for the first quarter of 2006. The decrease is mainly due to lower average cash and investment balances in the first quarter of 2007 compared to the first quarter of 2006.

Interest income in the future will be affected by changes in short-term interest rates and changes in cash balances, which may materially increase or
decrease as a result of acquisitions and other financing activities.



19



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Interest Expense.Interest expense was $7.2 million for the first quarter of 2007
compared to $8.3 million for the first quarter of 2006. The decrease was mainly due to a lower average balance of our convertible debt in the first three months of 2007 compared to the first three months of 2006 as a result of the repayment of our
2006 notes which occurred in December 2006.

Provision for Income Taxes.The estimated annual effective tax
rate on continuing operations as a percentage of pre-tax income was 26.9% for the first quarter of 2007 compared with 30.4% for the first quarter of 2006. The decrease in the in the effective tax rate is due primarily to
increased tax benefits on our stock compensation expense as accounted for under SFAS 123R .

Segment Results for the First Quarter
of 2007 Compared to the First Quarter of 2006

BioDiscovery Segment. BioDiscovery revenues for the first quarter of 2007
increased $18.3 million or 9% compared to the first quarter of 2006. The increase was mainly driven by $9.5 million in increased volume and pricing, $3.0 million in increased royalties, and $5.8 million in favorable currency translation.
BioDiscovery gross margin for the first quarter of 2007 increased two percentage points to 72% compared to the first quarter of 2006. BioDiscovery gross margin in the first quarter of 2007 was favorably impacted by increased volume, the impact of
higher royalty revenue and increased pricing. BioDiscovery operating margin increased four percentage points to 30% for the first quarter of 2007 compared to the first quarter of 2006. The increase was due to the increase in BioDiscovery gross
margin and lower spending in sales and marketing and research and development as a percentage of revenues in the first quarter of 2007 compared to the same quarter in 2006.

CCS Segment. CCS revenues for the first quarter of 2007 increased $10.4 million or 13% compared to the first quarter of 2006. The increase was
mainly due to $9.1 million in increased volume and $2.3 million in favorable currency translation, partially offset by a $1.0 million decrease in pricing. CCS gross margin for the first quarter of 2007 decreased seven percentage points to 47%
compared to the first quarter of 2006. The decrease was mainly due to declines in sera pricing, unfavorable shifts in product mix, higher manufacturing costs, and higher operations costs. CCS operating margin decreased by five percentage points to
18% for the first quarter of 2007 compared to the first quarter of 2006. The decrease was mainly due to decreased gross margins and higher general and administration expenses.

LIQUIDITY AND CAPITAL RESOURCES

Cash and cash equivalents were $329.4 million at March 31,
2007, a decrease of $13.7 million from December 31, 2006 primarily due to cash provided from operating activities of $67.9 million, and favorable impact of foreign currency of $1.9 million, partially offset cash used in investing activities of
$4.2 million and by cash used in financing activities of $85.8 million. Cash flow from discontinued operations are included in the consolidated statements of cash flows.

Operating activities provided net cash of $67.9 million during the first quarter of 2007 primarily from our net income of $30.3 million and net non-cash charges of $61.5 million. Net changes in operating assets and
liabilities reduced cash from operating activities by $23.9 million. The decrease was mainly due to a $10.7 million decrease in accrued expenses and other liabilities, a $2.7 million increase in prepaid expenses and other assets, a $5.5 million
increase in inventories due to timing of when inventories were produced and sold and $13.6 million decrease in income taxes payable primarily due to an increase in our income tax provision. These decreases were partially offset by a $7.4 million
decrease in accounts payable primarily due to timing of when payments were made.

As a result of working capital improvement programs, we
expect to utilize our working capital more efficiently in the future resulting in higher inventory turnover and lower days sales outstanding. Our working capital factors, such as inventory turnover and days sales outstanding are seasonal, and on an
interim basis during the year, may require an influx of short-term working capital.



20



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On January 9, 2006, we entered into a syndicated $250.0 million senior secured credit facility (the
Credit Facility) with Bank of America, N.A. Interest rates on outstanding borrowings are determined by reference to LIBOR or to an alternate base rate, with margins determined based on changes in our leverage ratio. Under the terms of the Credit
Facility, we may request that the aggregate amount available be increased by $100.0 million of additional financing, subject to certain conditions having been met, including the availability of additional lender commitments. The Credit Facility
contains various representations, warranties, affirmative, negative and financial covenants, and conditions of default customary for financings of this type. We currently anticipate using the proceeds of the Credit Facility for the purpose of
general working capital and capital expenditures, and the Credit Facility will terminate and all amounts outstanding under it will be due and payable in full on January 6, 2011. As of March 31, 2006 and 2007, the available credit were
$250.0 million and $ 239.9 million as the Company has issued $0.0 million and $10.1 million, respectively, in letters of credit through the facility. See Note 7 of the Notes to Consolidated Financial Statements.

As of March 31, 2007, several of the Companys foreign subsidiaries had available bank lines of credit denominated in local currency to meet
short-term working capital requirements. The U.S. dollar equivalent of these facilities totaled $18.1 million, none of which was outstanding at March 31, 2007.

We believe our current cash and cash equivalents, investments, cash provided by operations and interest income earned thereon will satisfy our working capital requirements for the foreseeable future. Our future
capital requirements and the adequacy of our available funds will depend on many factors, including future business acquisitions, future stock or note repayment or repurchases, scientific progress in our research and development programs and the
magnitude of those programs, our ability to establish collaborative and licensing arrangements, the cost involved in preparing, filing, prosecuting, maintaining and enforcing patent claims and competing technological and market developments.

We intend to continue our strategic investment activities in new product development, in-licensing technologies and acquisitions that
support our BioDiscovery and CCS platforms. In the event additional funding needs arise, we may obtain cash through new debt or stock issuance, or a combination of sources.

CONTRACTUAL OBLIGATIONS

We did not enter into any significant contractual obligations during the
three months ended March 31, 2007. We have no significant contractual obligations not fully recorded on our Consolidated Balance Sheets or fully disclosed in the Notes to our Consolidated Financial Statements. We have no off-balance sheet
arrangements as defined in S-K 303(a)(4)(ii). See Note 8 to our Consolidated Financial Statements.



|ITEM 3. | Quantitative and Qualitative Disclosures About Market Risk
|------- | ----------------------------------------------------------

We are exposed to market risk related to changes in foreign currency exchange rates, commodity prices, and interest rates, and we selectively use financial instruments to manage these risks. We do not enter into financial instruments for
speculation or trading purposes. These financial exposures are monitored and managed by us as an integral part of our overall risk management program, which recognizes the unpredictability of financial markets and seeks to reduce potentially adverse
effects on our results.

Foreign Currency Transactions

We have operations in the Americas, Europe and Asia-Pacific. As a result, our financial position, results of operations and cash flows can be affected by fluctuations in foreign currency exchange rates. Many of our
reporting entities conduct a portion of their business in currencies other than the entitys functional currency. These transactions give rise to receivables and payables that are denominated in currencies other than the entitys
functional currency. The value of these receivables and payables is subject to changes in exchange rates because they may become worth more or less than they were worth at the time we entered into the transaction due to changes in exchange rates.
Both realized and unrealized gains or losses on the value of these receivables and payables are included in the determination of net income. Realized and unrealized gains or losses on the value of financial contracts entered into to hedge the
exchange rate exposure of these receivables and payables are also included in the determination of net income. Net currency exchange gains recognized on business transactions, net of hedging transactions, were $59,000 for the three months ended
March 31, 2007 and are included in other income and expense in the Consolidated Statements of Operations.

Our currency exposures
vary, but are primarily concentrated in the euro, British pound sterling, Norwegian kroner and Japanese yen. Historically, we have used foreign currency forward contracts to mitigate foreign currency risk on foreign currency receivables and
payables. At March 31, 2007, we had no foreign currency forward contracts outstanding to hedge currency risk on specific receivables and payables.



21



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In addition to hedging the value of our foreign currency receivables and payables, our foreign
currency-hedging program includes hedging of forecasted foreign currency cash flows. The increase or decrease in value of forward contracts to hedge forecasted foreign currency cash flows prior to their maturity are accounted for as cash flow hedges
and recorded in other comprehensive income in the Consolidated Balance Sheets. To the extent any portion of the forward contracts is determined to not be an effective hedge, the increase or decrease in value prior to the maturity are recorded in
other income and expense in the Consolidated Statements of Operations. At March 31, 2007, we did not have any outstanding forward contracts to hedge forecasted foreign currency cash flows.

Commodity Prices

Our exposure to commodity price
changes relates to certain manufacturing operations that utilize certain commodities as raw materials. We manage our exposure to changes in those prices primarily through our procurement and sales practices.

Interest Rates

Our investment portfolio is
maintained in accordance with our investment policy that defines allowable investments, specifies credit quality standards and limits the credit exposure of any single issuer. The fair value of our cash equivalents and marketable securities is
subject to change as a result of changes in market interest rates and investment risk related to the issuers credit worthiness. We do not utilize financial contracts to manage our exposure in our investment portfolio to changes in interest
rates. At March 31, 2007, we had $333.5 million in cash, cash equivalents and marketable securities, all of which are stated at fair value. Changes in market interest rates would not be expected to have a material impact on the fair value of
$329.4 million of our cash and cash equivalents at March 31, 2007, as these consisted of securities with maturities of less than three months. A 100 basis point increase or decrease in interest rates would, however, decrease or increase,
respectively, the remaining $4.1 million of our investments by approximately $29,000. While changes in interest rates may affect the fair value of our investment portfolio, any gains or losses will not be recognized in our statement of operations
until the investment is sold or if the reduction in fair value was determined to be a permanent impairment.



|ITEM 4. | Controls and Procedures
|------- | -----------------------

The Company maintains
disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act in 1934, as amended (the Exchange Act)) that are designed to ensure that information required to be disclosed in the
Companys reports filed under the Exchange Act, is recorded, processed, summarized and reported within the time periods specified in the SECs rules and forms, and that such information is accumulated and communicated to the Companys
management, including the Companys Principal Executive Officer and Principal Financial Officer, as appropriate, to allow timely decisions regarding required disclosure.

As of the end of the period covered by this report (the Evaluation Date), an evaluation was carried out under the supervision and with the
participation of the Companys management, including the Companys Principal Executive Officer and Principal Financial Officer, of the effectiveness of the design and operation of the Companys disclosure controls and procedures as of
the Evaluation Date. Based upon that evaluation, the Principal Executive Officer and Principal Financial Officer have concluded that the Companys disclosure controls and procedures were effective at the reasonable assurance level as of the
Evaluation Date.

In addition, the Principal Executive Officer and Principal Financial Officer have concluded that there have been no
changes to the Companys internal controls over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) during the last fiscal quarter that has materially affected, or are reasonably likely to materially affect,
the Companys internal controls over financial reporting.



22



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PART II. OTHER INFORMATION

ITEM 1. Legal Proceedings

We are engaged in various legal actions arising in the ordinary course of our business and
believe that the ultimate outcome of these actions will not have a material adverse effect on our business or financial condition.

ITEM 1A. Risk
Factors.

There are no material changes from risk factors disclosed in our Form 10-K for the year ended December 31, 2006, as filed
on March 1, 2007.

ITEM 2. Unregistered Sales of Equity Securities and Use of Proceeds



| | a) | None.
| | -- | -----



| | b) | None.
| | -- | -----



| | c) | 
| | -- | 

|                         |  |                                             |  |                             |       |                                                                                         |   |                                                                                                                      |  |   |            
|------------------------ |  | ------------------------------------------- |  | --------------------------- | ----- | --------------------------------------------------------------------------------------- | - | -------------------------------------------------------------------------------------------------------------------- |  | - | -----------
|Period                   |  | (a) TotalNumber ofShares (orUnits)purchased |  | (b)AveragePricePaidperShare |       | (c) Total Numberof Shares (orUnits)Purchased asPart ofPubliclyAnnouncedPlans orPrograms |   | (d)Maximum Number(or ApproximateDollar Value) ofShares (or Units) thatMay Yet BePurchased Under thePlans or Programs
|January 1 - January 31   |  |                                            |  | $                           |      |                                                                                         | $ |                                                                                                                     |  | $ | 150,008,217
|February 1 - February 28 |  | 1,211,200                                   |  | $                           | 65.99 |                                                                                         | $ | 79,928,838                                                                                                           |  | $ | 70,079,379 
|March 1 - March 31       |  | 309,687                                     |  | $                           | 63.75 |                                                                                         | $ | 19,742,098                                                                                                           |  | $ | 50,337,281 
|Total                    |  | 1,520,887                                   |  | $                           | 65.53 |                                                                                         | $ | 99,670,936                                                                                                           |  | $ | 50,337,281 

ITEM 3. Defaults Upon Senior Securities

None.

ITEM 4. Submission of Matters to a Vote of
Security Holders

None.

ITEM 5.
Other Information

None.

ITEM 6.
Exhibits and Reports on Form 8-K

Exhibits: For a list of exhibits filed with this report, refer to the Index to Exhibits.



23



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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.



|      |  |             |  |                        |  |     |  |                                                                                                    
|----- |  | ----------- |  | ---------------------- |  | --- |  | ---------------------------------------------------------------------------------------------------
|      |  |             |  | INVITROGEN CORPORATION
|      |  |             |  |                       
|Date: |  | May 7, 2007 |  |                        |  | By: |  | /s/    David F. Hoffmeister                                                                        
|      |  |             |  |                        |  |     |  | David F. Hoffmeister Chief Financial
Officer (Principal Financial Officer and Authorized
Signatory)



24



---

INDEX TO EXHIBITS



|               |  |                                                                                                                                                                                                                                     
|-------------- |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|EXHIBIT NUMBER |  | DESCRIPTION OF DOCUMENT                                                                                                                                                                                                             
|               | 
|3.1            |  | Restated Certificate of Incorporation of Invitrogen, as amended.(1)                                                                                                                                                                 
|               | 
|3.2            |  | Amended and Restated Bylaws of Invitrogen.(2)                                                                                                                                                                                       
|               | 
|3.3            |  | Certificate of Correction to the Restated Certificate of Incorporation of Invitrogen, dated February 21, 2001.(3)                                                                                                                   
|               | 
|4.1            |  | Specimen Common Stock Certificate.(4)                                                                                                                                                                                               
|               | 
|4.2            |  | 51/2% Convertible Subordinated Notes Due 2007,
Registration Rights Agreement, by and among Invitrogen, and Donaldson, Lufkin & Jenrette Securities Corporation et al., as Initial Purchasers, dated March 1, 2000.(5)               
|               | 
|4.3            |  | Indenture, by and between Invitrogen and State Street Bank and Trust Company of California, N.A., dated March 1, 2000.(5)                                                                                                           
|               | 
|4.4            |  | 21/4% Convertible Subordinated Notes due 2006,
Registration Rights Agreement, by and among Invitrogen and Credit Suisse First Boston Corporation et al., as Initial Purchasers, dated December 11, 2001.(6)                         
|               | 
|4.5            |  | Indenture, by and between Invitrogen and State Street Bank and Trust Company of California, N.A. and Table of Contents of Indenture, including Cross-Reference Table to the Trust Indenture Act of
1989, dated December 11, 2001.(6)
|               | 
|4.6            |  | 2% Convertible Senior Notes Due 2023, Registration Rights Agreement, by and among Invitrogen, and UBS Securities LLC and Credit Suisse First Boston LLC, as Initial Purchasers, dated August 1,
2003.(7)                            
|               | 
|4.7            |  | Indenture, by and between Invitrogen and U.S. Bank National Association, dated August 1, 2003.(7)                                                                                                                                   
|               | 
|4.8            |  | 11/2% Convertible Senior Notes Due 2024, Registration
Rights Agreement, by and among Invitrogen, and UBS Securities LLC and Bear Stearns & Co Inc., as Initial Purchasers, dated February 19, 2004.(8)                              
|               | 
|4.9            |  | Indenture, by and between Invitrogen and U.S. Bank National Association, dated February 19, 2004.(8)                                                                                                                                
|               | 
|4.10           |  | Indenture, by and between Invitrogen and U.S. Bank National Association, dated as of December 14, 2004. (9)                                                                                                                         
|               | 
|4.11           |  | Indenture, by and between Invitrogen and U.S. Bank National Association, dated as of December 14, 2004. (9)                                                                                                                         
|               | 
|4.12           |  | 3.25% Convertible Senior Notes Due 2025, Registration Rights Agreement, by and among Invitrogen, and UBS Securities LLC and Banc of America Securities LLC., as Initial Purchasers, dated June 20,
2005. (10)                       
|               | 
|4.13           |  | 3.25% Convertible Senior Notes Due 2025, Indenture, by and between Invitrogen and U.S. Bank National Association, dated June 20, 2005.(10)                                                                                          
|               | 
|10.101         |  | Form of Change-In-Control Agreement for executive officers employed on or before February 28, 2007.(11)                                                                                                                             
|               | 
|10.102         |  | Form of Change-In-Control Agreement for executive officers employed after February 28, 2007. (11)                                                                                                                                   
|               | 
|10.103         |  | Form of Amended and Restated Change-In-Control Agreement for the Chief Executive Officer . (11)                                                                                                                                     
|               | 
|10.104         |  | Notice of Grant.(11)                                                                                                                                                                                                                
|               | 
|10.105         |  | Performance Share Agreement. (11)                                                                                                                                                                                                   
|               | 
|31.1           |  | Certification of Chief Executive Officer                                                                                                                                                                                            
|               | 
|31.2           |  | Certification of Chief Financial Officer                                                                                                                                                                                            
|               | 
|32.1           |  | Certification of Chief Executive Officer                                                                                                                                                                                            
|               | 
|32.2           |  | Certification of Chief Financial Officer                                                                                                                                                                                            

---

|(1) | Incorporated by reference to the Registrants Quarterly Report on Form 10-Q for the Quarterly Period Ended September 30, 2000 (File No. 000-25317).
|--- | ---------------------------------------------------------------------------------------------------------------------------------------------------



|(2) | The Amended and Restated Bylaws are incorporated by reference to the Registrants Registration Statement on Form S-1 (File No. 333-68665). A further amendment to the
Bylaws adopted by a Resolution of the Board of Directors dated July 19, 2001 is incorporated by reference to the Registrants Quarterly Report on Form 10-Q for the Quarterly Period Ended June 30, 2001 (File No. 000-25317).
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(3) | Incorporated by reference to the Registrants Quarterly Report on Form 10-Q for the Quarterly Period Ended March 31, 2001 (File No. 000-25317).
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------



|(4) | Incorporated by reference to Registrants Registration Statement on Form S-1 (File No. 333-68665).
|--- | --------------------------------------------------------------------------------------------------



|(5) | Incorporated by reference to the Registrants Registration Statement on Form S-3 (File No. 333-37964).
|--- | ------------------------------------------------------------------------------------------------------



25



---

|(6) | Incorporated by reference to the Registrants Annual Report on Form 10-K for the Year Ended December 31, 2001 (File No. 000-25317), as amended.
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------



|(7) | Incorporated by reference to Registrants Registration Statement on Form S-3 (File No. 333-110060).
|--- | ---------------------------------------------------------------------------------------------------



|(8) | Incorporated by reference to Registrants Quarterly Report on Form 10-Q for the Quarterly Period ended March 31, 2004 (File No. 000-25317).
|--- | -------------------------------------------------------------------------------------------------------------------------------------------



|(9) | Incorporated by reference to Registrants Quarterly Report on Form 10-K for the year period ended December 31, 2004. (File No. 000-25317).
|--- | ------------------------------------------------------------------------------------------------------------------------------------------



|(10) | Incorporated by reference to Registrants Current Report on Form 8-K, filed on June 24, 2005 (File No. 000-25317).
|---- | ------------------------------------------------------------------------------------------------------------------



|(11) | Incorporated by reference to Registrants Current Report on Form 8-K, filed on March 2, 2007 (File No. 000-25317).
|---- | ------------------------------------------------------------------------------------------------------------------



26