All Financial Statements for 2007 Now Available in US GAAP TORONTO, Jan. 29 /PRNewswire-FirstCall/ -- MDS Inc. (TSX: MDS; NYSE: MDZ), a leading provider of products and services to the global life sciences markets, today announced that it has issued its annual filings for the first time under US GAAP. These filings include the Annual Report, Annual Information Form, Management Proxy Circular, 40-F, and the Canadian Supplement to the annual MD&A. To assist investors with understanding the impact of the conversion from Canadian to US GAAP, both an "MDS US GAAP Primer", which provides an overview of the relevant differences between US and Canadian GAAP affecting MDS, and reconciliation tables for MDS and its business units are being made available on the MDS website. MDS also published its interactive annual report today available at http://www.mdsinc.com/. About MDS Inc. MDS Inc. is a global life sciences company that provides market-leading products and services that our customers need for the development of drugs and the diagnosis and treatment of disease. We are a leading global provider of pharmaceutical contract research, medical isotopes for molecular imaging, radiotherapeutics, and analytical instruments. MDS has more than 5,500 highly skilled people in 29 countries. Find out more at http://www.mdsinc.com/ or by calling 1-888-MDS-7222, 24 hours a day. DATASOURCE: MDS Inc. CONTACT: Sharon Mathers, Senior Vice-President, Investor Relations and External Communications, MDS Inc., (416) 675-6777 X 34721,

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