The information request was issued under notification requirements of the Hart Scott Rodino Antitrust Improvements Act of 1976, as amended (HSR Act). The effect of the Second Request is to extend the waiting period imposed by the HSR Act for a period of 30 calendar days from the date of the parties' substantial compliance with the request, unless the waiting period is earlier terminated.

MDS Inc. and Danaher Corporation continue to cooperate with the FTC and currently expect the transaction, which was announced on September 2, 2009 and received approval from MDS shareholders on October 20, 2009, to close before the end of the first calendar quarter of 2010, subject to the satisfaction of the conditions to closing.

About Danaher Corporation

Danaher is a diversified technology leader that designs, manufactures, and markets innovative products and services to professional, medical, industrial, and commercial customers. Our portfolio of premier brands is among the most highly recognized in each of the markets we serve. Driven by a foundation provided by the Danaher Business System, our 50,000 associates serve customers in more than 125 countries and generated $12.7 billion of revenue in 2008. For more information, please visit our Website: www.danaher.com

About MDS Inc.

MDS Inc. (TSX: MDS; NYSE: MDZ) is a global life sciences company that provides market-leading products and services that customers need for the development of drugs and diagnosis and treatment of disease. MDS Inc. is a leading global provider of pharmaceutical contract research, medical isotopes for molecular imaging, radiotherapeutics, and analytical instruments. MDS has more than 3,600 highly skilled people in 13 countries. Find out more at www.mdsinc.com or by calling 1-888-MDS-7222, 24 hours a day.

SOURCE: MDS Inc.

MDS CONTACTS: MEDIA: Janet Ko, (905) 267-4226, janet.ko@mdsinc.com; INVESTORS: Peter
Dans, (905) 267-4230, peter.dans@mdsinc.com; DANAHER CONTACT: MEDIA AND INVESTORS:
Matt McGrew, (202) 828-0850, matt.mcgrew@danaher.com

"The MDS Board of Directors is pleased that shareholders have voted to support the divestiture of the MDS Analytical Technologies business," said James S. A. MacDonald, Chairman of the MDS Inc.'s Board of Directors. "Subject to the completion of sale of MDS Analytical Technologies, the Company currently intends to return approximately $400 million to $450 million of sale proceeds to shareholders by way of a share buyback through a Substantial Issuer Bid."

The completion of the proposed sale of MDS Analytical Technologies, which was originally announced on September 2, 2009, remains subject to receipt of regulatory approvals and customary closing conditions.

"We continue to believe that the repositioning of MDS will unlock the value of our business in the near-term and provide greater opportunities for each business going forward," said Stephen P. DeFalco, President and Chief Executive Officer, MDS Inc. "Shareholder approval of the sale of MDS Analytical Technologies marks another important milestone in our repositioning strategy."

MDS Inc. Strategic Repositioning

In addition to the sale of MDS Analytical Technologies, the Company also announced on September 2, 2009, that it intends to sell its MDS Pharma Services business, a leading provider of innovative drug discovery and early-stage development solutions for pharmaceutical and biotechnology companies. Upon completion of these transactions, the Company will be focused solely on its MDS Nordion business, which is a leading provider of medical isotopes for molecular and diagnostic imaging, radiotherapeutics and sterilization technologies. Additional background materials pertaining to the new strategic direction for MDS Inc. can be found on MDS Inc.'s Website at http://www.mdsinc.com/strategic_repositioning_of_mds/index.asp.

There can be no assurance that MDS will complete a transaction involving MDS Pharma Services. If MDS determines that there is not an acceptable transaction, it intends to retain and invest in building the business.

About MDS

MDS Inc. (TSX: MDS; NYSE: MDZ) is a global life sciences company that provides market-leading products and services that our customers need for the development of drugs and 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 4,200 highly skilled people in 13 countries. Find out more at www.mdsinc.com or by calling 1-888-MDS-7222, 24 hours a day.

Caution Concerning Forward-Looking Statements

This document contains forward-looking statements. Some forward-looking statements may be identified by words like "believes", "expects", "anticipates", "plans", "intends", "indicates" or similar expressions. The statements are not a guarantee of future performance and are inherently subject to risks and uncertainties. MDS's actual results could differ materially from those expressed in the forward-looking statements due to these risks and a number of other factors, including, but not limited to, successful completion of the aforementioned divestiture, successful implementation of structural changes, including restructuring plans and acquisitions, technical or manufacturing or distribution issues, the competitive environment for MDS's products and services, the degree of market penetration of its products and services, the ability to secure a reliable supply of raw materials, the impact of our clients' exercising rights to delay or cancel certain contracts, the strength of the global economy, the stability of global equity markets, the availability and cost of financing, the impact of the movement of the U.S. dollar relative to other currencies, particularly the Canadian dollar and the euro, uncertainties associated with critical accounting assumptions and estimates, and other factors set forth in reports and other documents filed by MDS with Canadian and U.S. securities regulatory authorities from time to time, including MDS's quarterly and annual MD&A, Annual Information Form, and Annual Report on Form 40-F for the fiscal year ended October 31, 2008 filed with the U.S. Securities & Exchange Commission.

SOURCE MDS Inc.