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Nobel Prize for medicine shared by scientists all 3 United States to work DNA:-

Three researchers, based in the United States in 2009 won the Nobel Prize in Medicine for work on cell division and aging. And exchange of scientists and the three award $ 1.4 million is: H. Elizabeth Blackburn, Ph.D., University of California, San Francisco; Carol W. Greider, Ph.D., Johns Hopkins University School of Medicine in Maryland, and Jack W. Szostak, Ph.D., Harvard Medical School in Massachusetts.

Trio won the 1980s action show how chromosomes are protected against the degradation of DNA molecules called telomeres by an enzyme called Telomerase. As a cell divides, telomeres get shorter. Process is known to contribute to cancer and cellular aging, "said Francis S. Collins , MD, Ph.D., director of the National Institutes of Health, which awarded three grants from $ 32 million over 30 years.