pSivida Managing Director Comments on Recent CDS Acquisition

PERTH, Australia--(BUSINESS WIRE)--Oct. 13, 2005--Global bio-nanotech company pSivida Limited (NASDAQ:PSDV, ASX:PSD, Xetra:PSI) today announced that its managing director, Gavin Rezos, was interviewed by Corporate File in Australia. In this Open Briefing, Rezos clarifies and comments on the importance of the company's recently announced acquisition of Control Delivery Systems of Boston. The interview can be accessed at


pSivida Limited

pSivida is a global bio-nanotech company committed to the biomedical sector and the development of products in healthcare. The company's focus is the development and commercialization of a modified form of silicon (porosified or nano-structured silicon) known as BioSilicon(TM).

pSivida owns the intellectual property pertaining to BioSilicon(TM) for use in or on humans and animals. The IP portfolio consists of 29 patent families, 34 granted patents and over 80 patent applications. The core patent, which recognizes BioSilicon(TM) as a biomaterial was granted in the UK in 2000 and in the US in 2001.

pSivida is listed on NASDAQ (PSDV), the Australian Stock Exchange (PSD) and in Germany on the Frankfurt Stock Exchange on the XETRA system (German Symbol: PSI. Securities Code (WKN) 358705). pSivida's shares also trade in the United Kingdom on the OFEX International Market Service (IMS) under the ticker symbol PSD. pSivida is a founding member of the NASDAQ Health Care Index and the Merrill Lynch Nanotechnology Index.

The Company's strategic partner and largest shareholder is the QinetiQ group, the largest science and technology company in Europe. QinetiQ is the former UK government Defence Evaluation Research Agency and was instrumental in discovering BioSilicon(TM). pSivida enjoys a strong relationship with QinetiQ having access to its cutting edge research and development facilities. For more information on QinetiQ visit

For more information visit

This announcement does not constitute an offer of any securities for sale or the solicitation of an offer to buy any securities. Any securities offered may not be or have not been registered under the US Securities Act of 1933, as amended, and may not be offered or sold in the United States absent registration or an applicable exemption from registration requirements."

This document contains forward-looking statements that involve risks and uncertainties. Although we believe that the expectations reflected in such forward-looking statements are reasonable at this time, we can give no assurance that such expectations will prove to be correct. Given these uncertainties, readers are cautioned not to place undue reliance on such forward-looking statements. Actual results could differ materially from those anticipated in these forward-looking statements due to many important factors including: our failure to develop applications for BioSilicon(TM) due to regulatory, scientific or other issues, our inability to negotiate and consummate the proposed acquisition, our inability to successfully integrate the CDS's operations and employees; the failure of the CDS's products to achieve expected revenues and the combined entity's inability to develop existing or proposed products. Other reasons are contained in cautionary statements in the Registration Statement on Form 20-F filed with the U.S. Securities and Exchange Commission, including, without limitation, under Item 3.D, "Risk Factors" therein. We do not undertake to update any oral or written forward-looking statements that may be made by or on behalf of pSivida.


pSivida Limited
Brian Leedman, + 61 8 9226 5099
Investor Relations
US Public Relations
Martin E. Janis & Company, Inc
Beverly Jedynak, +1 (312) 943 1100 ext. 12
UK & Europe Public Relations
Citigate Dewe Rogerson
Mark Swallow, PhD / Helena Podd
+44 (0)20 7638 9571

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