Nobel Prize winner Greider talks about her work during a news conference at Johns Hopkins University in Baltimore, Maryland
Carol Greider, professor in the department of molecular biology and genetics at Johns Hopkins University School of Medicine and winner of a share of the 2009 Nobel Prize for Medicine, talks about her work during a news conference in Baltimore, Maryland, October 5, 2009. Greider, along with Australian-born Elizabeth Blackburn and British-born Jack Szostak, won the Nobel prize for medicine on Monday for discovering and identifying telomerase, the enzyme that renews the little caps on the end of chromosomes whose natural fraying underlies aging and cancer. REUTERS/Jonathan Ernst (UNITED STATES SCI TECH)
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