Three Americans Share 2009 Nobel Prize for MedicineQuicklink submitted by Margaret Bassett Permalink
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|The trio solved a big problem in biology: how chromosomes can be 'copied in a complete way during cell divisions and how they are protected against degradation,' the citation said. It said the laureates have shown that the solution is to be found in the ends of the chromosomes -- the telomeres -- and in an enzyme that forms them. Telomeres are often compared to the plastic tips at the end of shoe laces that keep those laces|
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