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Exhibit 31.2

CERTIFICATION PURSUANT TO18 U.S.C. ss.1350, AS
ADOPTED PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Yaky Yanay, certify that:

1.         
 I have reviewed this annual report on Form 10-KSB of Pluristem Life
Systems, Inc.;

2.           Based
on my knowledge, this report does not contain any untrue statement of a material
fact or omit to state a material fact necessary to make the statements made, in
light of the circumstances under which such statements were made, not misleading
with respect to the period covered by this report;

3.           Based
on my knowledge, the financial statements, and other financial information
included in this report, fairly present in all material respects the financial
condition, results of operations and cash flows of the registrant as of, and
for, the periods presented in this report;

4.           The
registrant's other certifying officer and I are responsible for establishing and
maintaining disclosure controls and procedures (as defined in Exchange Act Rules
13a-15(e) and 15d-15(e)) and 15d-15(f)) for the registrant and have:

| | (a) | Designed such disclosure controls and procedures, or
      caused such disclosure controls and procedures to be designed under our
      supervision, to ensure that material information relating to the
      registrant, including its consolidated subsidiaries, is made known to us
      by others within those entities, particularly during the period in which
      this report is being prepared;         
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| | (b) | Evaluated the effectiveness of the registrant's
      disclosure controls and procedures and presented in this report our
      conclusions about the effectiveness of the disclosure controls and
      procedures, as of the end of the period covered by this report based on
      such evaluation; and                                                                                                          
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| | (c) | Disclosed in this report any change in the registrant's
      internal control over financial reporting that occurred during the
      registrant's most recent fiscal quarter (the registrant's fourth fiscal
      quarter in the case of an annual report) that has materially affected, or
      is reasonably likely to materially affect, the registrant's internal
      control over financial reporting; and

5.           The
registrant's other certifying officer and I have disclosed, based on our most
recent evaluation of internal control over financial reporting, to the
registrant's auditors and the audit committee of the registrant's board of
directors (or persons performing the equivalent functions):

| | (a) | All significant deficiencies and material weaknesses in
      the design or operation of internal control over financial reporting which
      are reasonably likely to adversely affect the registrant's ability to
      record, process, summarize and report financial information; and
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| | (b) | Any fraud, whether or not material, that involves
      management or other employees who have a significant role in the
      registrant's internal control over financial
reporting.                                                                                                     

Date: September 4, 2007

By: /s/ Yaky YanayYaky Yanay Chief Financial
Officer(Principal Financial and Accounting Officer)

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