Handout photo of Dr. Robert Lefkowitz, Nobel Prize winner for Chemistry at a news conference at Duke University

 
Handout photo of Dr. Robert Lefkowitz, Nobel Prize winner for Chemistry at a news conference at Duke University
Robert Lefkowitz, M.D., Professor of Medicine, talks about winning the Nobel Prize for Chemistry at a press conference at the Duke University School of Nursing in this October 10, 2012 handout photo. REUTERS/Jared Lazarus/Duke Photography/Handout