FILE - This 2005 file photo provided by Yale University shows biologist James Rothman on the school's campus in New Haven, Conn. Americans James Rothman and Randy Schekman and German-born researcher ... more 
FILE - This 2005 file photo provided by Yale University shows biologist James Rothman on the school's campus in New Haven, Conn. Americans James Rothman and Randy Schekman and German-born researcher Thomas Sudhof have won the 2013 Nobel Prize in medicine in was announced on Monday Oct. 7, 2013. The Nobel committee cited "their discoveries of machinery regulating vesicle traffic, a major transport system in our cells. (AP Photo/Yale Unviersity, File) less 
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Associated Press | Photo By Yale Unviersity, File
Mon, Oct 7, 2013 1:04 PM EDT