Sanofi-Aventis CEO Chris Viehbacher, left, and Genzyme CEO, Henri Termeer greet each other during a news conference at Genzyme's headquarters in Cambridge, Mass., Wednesday, Feb. 16, 2011 to announce ... more 
Sanofi-Aventis CEO Chris Viehbacher, left, and Genzyme CEO, Henri Termeer greet each other during a news conference at Genzyme's headquarters in Cambridge, Mass., Wednesday, Feb. 16, 2011 to announce that The French drug maker agreed to buy Genzyme Corp. in an all-cash $20.1 billion deal after almost 9 months of negotiations. less 
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Associated Press | Photo By Josh Reynolds
Thu, Feb 17, 2011 1:21 AM EST