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Carol W. Greider
(born April 15, 1961) is an American
molecular biologist
. She completed her PhD in 1987 at the
University of California, Berkeley
, under
Elizabeth Blackburn
. Their research focused on
telomeres
, with which the ends of
chromosomes
are tipped, and they discovered the enzyme
telomerase
which replenishes the tips and determines the life span of the
cell
. For these discoveries, she shared the 2009
Nobel Prize in Physiology or Medicine
with Blackburn and
Jack W. Szostak
.
Photograph credit: Keith Weller; edited by
Adam Cuerden
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