<PAGE>

                                  Exhibit 10.19

                    On-Line License Agreement with Infoseek,

                             dated March 1, 1999 and

         Addendum dated November 22, 1999 for thehealthchannel.com, Inc.


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                        ONLINE LICENSE AGREEMENT ADDENDUM

         The terms of the Infoseek Corporation ONLINE LICENSE AGREEMENT
("License Agreement") for Ultraseek Server CCE Product Version 3.0 (the
"Software"), attached hereto as ATTACHMENT A, as modified hereby (collectively,
the "Agreement"), shall apply to use by BioLogix (also known as and hereinafter
referred to as "BIOLOGIX") of the Software on thehealthchannel.com WWW site
("The Health Channel Site").

1.       LICENSE

     A.  TERMS:

         1.       Subject to the terms and conditions of this Agreement, the
                  applicable maximum Number of documents and collections which
                  may be indexed under this license is 1,000,000 and 10,
                  respectively. Subject to the limitations of Paragraph 4 below,
                  the maximum Number of sites which may be indexed shall be
                  unlimited. The Software license key provided will enable the
                  Content Classification Engine.

         2.       Pricing: Pricing shall be based upon the number of queries
                  received per month on The Health Channel Site. BIOLOGIX will
                  pay to Infoseek a query rate of $4.00 per thousand queries,
                  subject to a nonrefundable, noncreditable minimum fee payable
                  as follows: (i) upon execution of this Addendum by BIOLOGIX
                  ("Execution Date") and attributable to the period beginning
                  upon delivery of the Software and ending on August 31, 1999,
                  BIOLOGIX shall pay to Infoseek ninety-seven thousand five
                  hundred dollars ($97,500) as the minimum fee for such period,
                  and (ii) a minimum monthly fee of sixteen thousand two hundred
                  and fifty dollars ($16,250) payable monthly in advance for
                  each subsequent month thereafter. Infoseek will credit
                  BIOLOGIX $21,000, which represents the unutilized prorated
                  remainder of the original Addendum dated March 12, 1999 (the
                  "Original Addendum"), against the minimum fee due from
                  BIOLOGIX as described above. The terms of this Addendum
                  supersede the terms of the Original Addendum.

         3.       On or before the tenth (10) business day of each calendar
                  month after the Execution Date, BIOLOGIX shall pay to Infoseek
                  any additional amounts owed in excess of the applicable
                  minimum monthly fee with respect to the previous calendar
                  month and BIOLOGIX shall submit to Infoseek with each fee
                  payment a statement detailing the calculation of the fee
                  payment. Infoseek shall have the right to retain a U.S.
                  nationally prominent or other mutually agreeable independent
                  auditor to whom BIOLOGIX shall allow reasonable access to
                  BIOLOGIX's applicable books of account and other records
                  relating to BIOLOGIX's obligations under this Agreement.
                  Access to BIOLOGIX's documentation shall be during BIOLOGIX's
                  regular business hours upon at least ten (10) days prior
                  written notice and may be conditioned upon the auditor
                  executing a confidentiality agreement in a form reasonably
                  acceptable to BIOLOGIX relating to the auditor's performance
                  of an audit hereunder. In the event that an audit discloses an
                  underpayment for any twelve (12) consecutive month period of
                  more than five percent (5%) of the aggregate amount due to
                  Infoseek, BIOLOGIX shall pay the reasonable costs of such
                  audit.

         4.       BIOLOGIX may use the Software only at The Health Channel Site
                  and shall limit use of the Software solely to index health and
                  directly health-related internet sites, subject to the
                  restriction that BIOLOGIX is authorized and hereby represents
                  and warrants to Infoseek that (i) it is authorized to index
                  such sites, (ii) that its entry into this Agreement does not
                  violate any agreement with any other party and that its use of
                  the Software to index the aforementioned sites will not
                  infringe any copyright, patent or any other proprietary right
                  of any third party, (iii) that its performance under this
                  Agreement, its use of the Software and the provision of its
                  service to users in conjunction therewith will conform to all
                  applicable laws and government rules and regulations, and (iv)
                  that it holds the necessary rights to permit the use of any
                  material, data or information (collectively, material)
                  accessible to users on The Health Channel Site; and that the
                  use, reproduction, distribution, or transmission of such
                  material will not violate any criminal or common law, any
                  statutory rights or any rights of any third parties,
                  including, but not limited to, such violations as infringement
                  or misappropriation of any copyright, patent, trademark, trade
                  secret, music, image, or other proprietary or property right,
                  false advertising, unfair competition, defamation, invasion of
                  privacy or rights of celebrity, violation of any
                  anti-discrimination law or regulation, or any other right of
                  any person or entity.

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         5.       Upon request by Infoseek and at Infoseek's sole discretion,
                  (i) The Health Channel's Homepage shall display the Infoseek
                  tagline "Powered by Infoseek", or other such tagline to be
                  provided by Infoseek (at the same font size displayed on The
                  Health Channel's Search Results Page); and (ii) an Internet
                  hyperlink back to Infoseek shall be displayed on The Health
                  Channel's Homepage in a manner subject to Infoseek's prior
                  approval. The display of such aforementioned Infoseek tagline
                  and Internet hyperlinks shall be changed and/or removed as may
                  be requested by Infoseek from time to time.

         6.       All search and results pages generated from the use of the
                  Software must attribute appropriate acknowledgement and
                  mutually agreed upon credit to Infoseek and shall display on
                  such pages proper acknowledgements of Infoseek's copyright,
                  trademark, or other proprietary rights. Further, each such
                  search and results page shall provide a mutually agreed upon
                  link back to Infoseek in a manner subject to Infoseek's
                  approval.

         7.       Infoseek may at its sole discretion, list The Health Channel
                  as a recommended site for selected health-related topics in
                  the Infoseek directory.

         8.       Infoseek may mirror the search index maintained by The Health
                  Channel, and use that index to provide a health-related search
                  capability on the Infoseek Service. If Infoseek does elect to
                  provide such a service, Infoseek will provide attribution in
                  the form of logo linked to The Health Channel adjacent to the
                  search box, or other branding acceptable to both parties.

         9.       Infoseek shall be the exclusive search service utilized by
                  BIOLOGIX for searching and indexing sites specified in
                  Paragraph 4 above.

         10.      In the event that The Health Channel site provides a general
                  Internet search page or link, in addition to the site search
                  provided by the Software, Infoseek shall be the exclusive
                  Internet search service listed.

         11.      Nothing in this Agreement shall preclude Infoseek and any of
                  Infoseek's related entities from negotiating and entering into
                  arrangements with other parties to create, for itself or
                  themselves create, a service similar to and/or competitive
                  with The Health Channel Site.

         12.      Infoseek may terminate this Agreement immediately upon breach
                  of any provision of this Agreement. Infoseek shall also have
                  the right to terminate this Agreement with respect to
                  BIOLOGIX'S ability to index the aforementioned health and
                  health-related Internet sites, without cause and upon at least
                  sixty (60) days prior written notice, effective at any time
                  after August 31, 1999. The rights and obligations specified as
                  surviving in Paragraph 8 of the License Agreement and the
                  rights and obligations specified in Paragraphs 3, 10, 13 and
                  14 hereof will remain in effect after termination or
                  expiration hereof. Upon termination of this Agreement,
                  BIOLOGIX shall either return to Infoseek all copies of the
                  Software or else destroy all such copies of the Software.

                  BioLogix shall have the right to terminate this agreement and
                  all associated payments at any point after August 31, 1999,
                  upon at least thirty (30) days prior written notice.

         13.      The parties to this Agreement are independent contractors.
                  Neither party is an agent, representative or partner of the
                  other party. Neither party shall have any right, power or
                  authority to enter into any agreement for or on behalf of, or
                  to incur any obligation or liability of, or to otherwise bind,
                  the other party. This Agreement shall not be interpreted or
                  construed to create an association, joint venture or
                  partnership between the parties or to impose any partnership
                  obligation or liability upon either party.

         14.      NOTICE: Any notices required or permitted to be given pursuant
                  to this Agreement shall be in writing, sent via certified
                  mail, return receipt requested, or delivered by hand,
                  addressed as set forth below or to such other address as may
                  be amended or modified only in writing to the other party, and
                  shall be deemed to have been given when received.

<PAGE>

                           IF TO Biologix International LTD:
                           1750 Montgomery Street
                           San Francisco, CA  94111
                    _______Attn: Michael Grandon

                           IF TO Infoseek:
                           Infoseek Corporation
                           1399 Moffett Park Drive
                           Sunnyvale, CA  94089
                           Attn: Legal Department

         15.      CONFIDENTIALITY OF AGREEMENT TERMS: Unless required by law,
                  and except for disclosure on a "need to know basis" to its own
                  employees, and its legal, investment, financial and other
                  professional advisers or to assert its rights under this
                  Agreement, BIOLOGIX agrees not to disclose the terms of this
                  Agreement or matters related thereto without the prior written
                  consent of Infoseek.

         16.      INDEMNIFICATION: BIOLOGIX agrees to indemnify Infoseek and
                  hold Infoseek harmless from and against any and all
                  liabilities, losses, damages, costs or expenses (including
                  reasonable attorneys' fees), arising out of (i) any use of
                  Software by BIOLOGIX and any legal liability arising out of or
                  relating thereto (ii) the Health Channel Site and any service
                  accessible therefrom and/or information or any material, data,
                  or information accessible to users on or from The Health
                  Channel Site or (iii) the breach by BIOLOGIX of any
                  representation, warranty or obligation under this Agreement.

         17.      TERM OF AGREEMENT: The initial term of this Agreement will be
                  for twelve months with an option to renew upon mutual
                  agreement by the parties, executed in writing and in advance,
                  for an annual renewal term. The initial term of this Agreement
                  commences on the Execution Date and shall end on March 1,
                  2000, unless terminated under paragraph A(10) of this
                  Addendum.

 EXCEPT AS OTHERWISE SPECIFIED HEREIN, THE TERMS AND CONDITIONS OF THE LICENSE
                  AGREEMENT REMAINS IN FULL FORCE AND EFFECT.

AGREED TO BY:
BIOLOGIX

By:/s/ Michael Grandon
Print Name: Michael Grandon
Title: President
Date: March 1, 1999

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[GRAPHIC OMITTED][GRAPHIC OMITTED]                            1.       QUOTATION

                             1399 MOFFETT PARK DRIVE
                                 SUNNYVALE, CA 94089
                                                 USA

Prepared for:
Richard A. Wolpow
thehealthchannel.com, Inc.
949. 631.8317 / 949.645.9907
Fax:  949.645.9728

     N.
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<CAPTION>

     O.       ITEM     QUANTITY                                    UNIT  PRICE
----------------------------------------------------------------------------------------------------------------------

<S>                                                                                    <C>
Ultraseek Server software with CCE 6 month           1                                  $ 97,500
                      LEASE RENEWAL IN ACCORDANCE WITH THE
                    LEASE AGREEMENT BETWEEN THEHEALTHCHANNEL
               (FORMERLY BIOLOGIX INC.) AND INFOSEEK CORPORATION.

                         LESS SPECIAL DISCOUNT* ($9,750)

Please see attached addendum to the license agreement.

Note: Additional support may be purchased at $60/hr
----------------------------------------------------------------------------------------------------------------------

                                                   TOTAL:                               $87,750

</TABLE>

*In exchange for placing an order before the quote date, and for retaining
branding, Infoseek will extend a special 10% discount to thehealthchannel.com,
Inc.

Quotation number LT288                         Quotation date: November 22, 1999
--------------------------------------------------------------------------------
This quotation is good through NOVEMBER 25, 1999, for the complete order, as
quoted. Please reference the Quotation on your order. Infoseek Corporation will
accept orders via check, Visa/MC/Amex, purchase order (subject to prior credit
approval) and wire transfer. Payment terms are Net 30. Please include complete
company billing information on your purchase order.

When ordering, please fax confirmation to 408-543-6164. Please note that the
terms of the Infoseek Ultraseek Server 3.0 Online License Agreement apply to any
order placed in response to this quotation. This agreement is available at
HTTP://SOFTWARE.INFOSEEK.COM/PRODUCTS/ULTRASEEK/LICENSE.HTM The terms and
conditions of such Online License Agreement will prevail over any contrary,
inconsistent, or additional terms included in any purchase order. Please send
checks and confirming orders to the above address:

                                        Attn: Software/ LISA TULL

We look forward to working with you. If you have any questions, please don't
hesitate to contact me at 415-865-8113 or by e-mail < LTULL@infoseek.com >