BIOIE Biosource International Inc. (MM)

BioSource International, Inc. (Nasdaq:BIOIE) today announced that Nasdaq has informed the Company that effective on Tuesday, July 5, 2005, BioSource common stock will once again trade under its original trading symbol "BIOI." The Company's stock has been trading under the amended symbol "BIOIE" since May 27, 2005, subsequent to the Company receiving a notice of delisting determination due to the delay in filing its periodic report with the SEC on Form 10-Q for the quarter ended March 31, 2005. BioSource filed its 2005 first quarter 10-Q on June 28, 2005, and has received notification from the Nasdaq Office of General Counsel, Listing Qualifications Hearings confirming compliance with SEC filing requirements and all other requirements for continued listing on the Nasdaq National Market. Accordingly, the Company's delisting hearing has been canceled and the hearing file will be closed. About BioSource International, Inc. BioSource International, Inc. is a broad-based life sciences company focused on providing integrated solutions in the areas of functional genomics, proteomics, and drug discovery through the development, manufacturing, marketing, and distribution of unique, biologically active reagent systems which facilitate, enable, and accelerate pharmaceutical development and biomedical research. For more information, please visit the Company's Web site at www.biosource.com. Statements included in this release that are not historical facts may be considered forward-looking statements that are subject to a variety of risks and uncertainties. In addition, readers are urged to consider statements that include the terms "believes," "belief," "expects," "plans," "objectives," "anticipates," "intends," "targets," "projections," or the like to be uncertain and forward looking. For these statements, we claim the safe harbor for "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. Factors that could cause actual results to differ and vary materially from the forward-looking statements made herein include, among others, our ability to expand our product offerings and any transition to new products, product quality and availability, any change in business conditions, changes in our sales strategy and product development plans, competitive pricing pressures, continued market acceptance of our products, name recognition of our products, delays in the development of new technology, possible invalidity or infringement issues related to intellectual property or proprietary rights, changes in customer buying patterns, one-time events, the effects of our previously announced process to evaluate strategic alternatives, including a possible sale of the Company, and any transaction we may enter into in connection with that process, and other important factors disclosed previously and from time to time in our filings with the Securities and Exchange Commission. These factors should not be construed as exhaustive. We cannot always predict or determine after the fact what factors would cause actual results to differ materially from those indicated by the forward-looking statements or other statements. We do not undertake any obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future event, or otherwise.