Common use of Purchaser Acknowledgement Clause in Contracts

Purchaser Acknowledgement. Each Purchaser has received (or otherwise had made available to it by the filing by the Company of an electronic version thereof with the Commission) the Base Prospectus, dated December 20, 2006, which is a part of the Company’s Registration Statement, including all documents and information incorporated by reference therein and amendments thereto and the Prospectus Supplement (collectively, the “Disclosure Package”), prior to or in connection with the receipt of this Agreement. Each Purchaser understands that no Person has been authorized to give any information or to make any representations that were not contained in the Disclosure Package, and such Purchaser has not relied on any such other information or representations in making a decision to purchase the Shares or the Warrants. Specifically, each Purchaser represents that it has reviewed the Prospectus Supplement, dated February 16, 2007.

Purchaser Acknowledgement. Each Purchaser has received (or otherwise had made available to it by the filing by the Company of an electronic version thereof with the Commission) the Base Prospectus, dated December 20, 2006, which is a part of the Company’s Registration Statement, including all documents and information incorporated by reference therein and amendments thereto and the Prospectus Supplement (collectively, the “Disclosure Package”), prior to or in connection with the receipt of this Agreement. Each Purchaser understands that no Person has been authorized to give any information or to make any representations that were not contained in the Disclosure Package, and such Purchaser has not relied on any such other information or representations in making a decision to purchase the Shares or the Warrants. Specifically, each Purchaser represents that it has reviewed the Prospectus Supplement, dated February 1620, 2007.

Purchaser Acknowledgement. Each Purchaser has received (or otherwise had made available to it by the filing by the Company of an electronic version thereof with the Commission) the Base Prospectus, dated December 20, 2006, which is a part of the Company’s Registration Statement, including all documents and information incorporated by reference therein and amendments thereto and the Prospectus Supplement (collectively, the “Disclosure Package”), prior to or in connection with the receipt of this Agreement. Each Purchaser understands that no Person has been authorized to give any information or to make any representations that were not contained in the Disclosure Package, and such Purchaser has not relied on any such other information or representations in making a decision to purchase the Shares or the Warrants. Specifically, each Purchaser represents that it has reviewed the Prospectus Supplement, dated February 16September 24, 2007.

Purchaser Acknowledgement. Each Purchaser has received (or otherwise had made available to it by the filing by the Company of an electronic version thereof with the Commission) the Base Prospectus, dated December 20, 2006, which is a part of the Company’s Registration Statement, including all documents and information incorporated by reference therein and amendments thereto and the Prospectus Supplement (collectively, the “Disclosure Package”), prior to or in connection with the receipt of this Agreement. Each Purchaser understands that no Person has been authorized to give any information or to make any representations that were not contained in the Disclosure Package, and such Purchaser has not relied on any such other information or representations in making a decision to purchase the Shares or the Warrants. Specifically, each Purchaser represents that it has reviewed the Prospectus Supplement, dated February 16September 14, 2007.