Jack Szostak, recipient of the 2009 Nobel prize in Medicine, (R), smiles as Dean of Harvard Medical School Jeffrey Flier, (L), and President of Massachusetts General Hospital Peter Slavin, (C), applaud for him before the start of a news conference at Massachusetts General Hospital in Boston, Massachusetts October 5, 2009. Three Americans 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 Pictures 1 month ago

Jack Szostak, recipient of the 2009 Nobel prize in Medicine, (R), smiles as Dean of Harvard Medical School Jeffrey Flier, (L), and President of Massachusetts General Hospital Peter Slavin, (C), applaud for him before the start of a news conference at Massachusetts General Hospital in Boston, Massachusetts October 5, 2009. Three Americans 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.

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  1. BALTIMORE - OCTOBER 05: Professor Carol Greider talks about the implications of her discovery during a news conference where she talked about winning the 2009 Nobel Prize in Physiology or Medicine at Johns Hopkins University October 5, 2009 in Baltimore, Maryland. Greider, 48, was recognized by the Royal Swedish Academy of Sciences for her 1984 discovery of telomerase, an enzyme that maintains the length and intergrity of chromosome ends and is critical for the health and survivial of all living cells and organisms. Greider, the Daniel Nathans Professor and Director of Molecular Biology and Genetics in the Johns Hopkins Institute for Basic Biomedical Sciences, shares the prize with Professor Elizabeth Blackburn of the University of California and Jacks Szostack of Harvard Medical School.
  2. BALTIMORE - OCTOBER 05: Professor Carol Greider speaks during a news conference where she talked about winning the 2009 Nobel Prize in Physiology or Medicine at Johns Hopkins University October 5, 2009 in Baltimore, Maryland. Greider, 48, was recognized by the Royal Swedish Academy of Sciences for her 1984 discovery of telomerase, an enzyme that maintains the length and intergrity of chromosome ends and is critical for the health and survivial of all living cells and organisms. Greider, the Daniel Nathans Professor and Director of Molecular Biology and Genetics in the Johns Hopkins Institute for Basic Biomedical Sciences, shares the prize with Professor Elizabeth Blackburn of the University of California and Jacks Szostack of Harvard Medical School.
  3. BALTIMORE - OCTOBER 05: Professor Carol Greider stands to address a news conference where she talked about winning the 2009 Nobel Prize in Physiology or Medicine at Johns Hopkins University October 5, 2009 in Baltimore, Maryland. Greider, 48, was recognized by the Royal Swedish Academy of Sciences for her 1984 discovery of telomerase, an enzyme that maintains the length and intergrity of chromosome ends and is critical for the health and survivial of all living cells and organisms. Greider, the Daniel Nathans Professor and Director of Molecular Biology and Genetics in the Johns Hopkins Institute for Basic Biomedical Sciences, shares the prize with Professor Elizabeth Blackburn of the University of California and Jacks Szostack of Harvard Medical School.
  4. BALTIMORE - OCTOBER 05: Professor Carol Greider speaks during a news conference where she talked about winning the 2009 Nobel Prize in Physiology or Medicine at Johns Hopkins University October 5, 2009 in Baltimore, Maryland. Greider, 48, was recognized by the Royal Swedish Academy of Sciences for her 1984 discovery of telomerase, an enzyme that maintains the length and intergrity of chromosome ends and is critical for the health and survivial of all living cells and organisms. Greider, the Daniel Nathans Professor and Director of Molecular Biology and Genetics in the Johns Hopkins Institute for Basic Biomedical Sciences, shares the prize with Professor Elizabeth Blackburn of the University of California and Jacks Szostack of Harvard Medical School.
  5. BALTIMORE - OCTOBER 05: Professor Carol Greider talks receives a standing ovation during a news conference where she talked about winning the 2009 Nobel Prize in Physiology or Medicine at Johns Hopkins University October 5, 2009 in Baltimore, Maryland. Greider, 48, was recognized by the Royal Swedish Academy of Sciences for her 1984 discovery of telomerase, an enzyme that maintains the length and intergrity of chromosome ends and is critical for the health and survivial of all living cells and organisms. Greider, the Daniel Nathans Professor and Director of Molecular Biology and Genetics in the Johns Hopkins Institute for Basic Biomedical Sciences, shares the prize with Professor Elizabeth Blackburn of the University of California and Jacks Szostack of Harvard Medical School.
  6. BALTIMORE - OCTOBER 05: Professor Carol Greider is glances at her watch before being interviewed by members of the news media after it was announced that she won the 2009 Nobel Prize in Physiology or Medicine at Johns Hopkins University October 5, 2009 in Baltimore, Maryland. Greider, 48, was recognized by the Royal Swedish Academy of Sciences for her 1984 discovery of telomerase, an enzyme that maintains the length and intergrity of chromosome ends and is critical for the health and survivial of all living cells and organisms. Greider, the Daniel Nathans Professor and Director of Molecular Biology and Genetics in the Johns Hopkins Institute for Basic Biomedical Sciences, shares the prize with Professor Elizabeth Blackburn of the University of California and Jacks Szostack of Harvard Medical School.
  7. BALTIMORE - OCTOBER 05: Professor Carol Greider speaks during a news conference where she talked about winning the 2009 Nobel Prize in Physiology or Medicine at Johns Hopkins University October 5, 2009 in Baltimore, Maryland. Greider, 48, was recognized by the Royal Swedish Academy of Sciences for her 1984 discovery of telomerase, an enzyme that maintains the length and intergrity of chromosome ends and is critical for the health and survivial of all living cells and organisms. Greider, the Daniel Nathans Professor and Director of Molecular Biology and Genetics in the Johns Hopkins Institute for Basic Biomedical Sciences, shares the prize with Professor Elizabeth Blackburn of the University of California and Jacks Szostack of Harvard Medical School.
  8. BALTIMORE - OCTOBER 05: Professor Carol Greider is interviewed by members of the news media after it was announced that she won the 2009 Nobel Prize in Physiology or Medicine at Johns Hopkins University October 5, 2009 in Baltimore, Maryland. Greider, 48, was recognized by the Royal Swedish Academy of Sciences for her 1984 discovery of telomerase, an enzyme that maintains the length and intergrity of chromosome ends and is critical for the health and survivial of all living cells and organisms. Greider, the Daniel Nathans Professor and Director of Molecular Biology and Genetics in the Johns Hopkins Institute for Basic Biomedical Sciences, shares the prize with Professor Elizabeth Blackburn of the University of California and Jacks Szostack of Harvard Medical School.
  9. BALTIMORE - OCTOBER 05: Professor Carol Greider gets a hug before a news conference where she talked about winning the 2009 Nobel Prize in Physiology or Medicine at Johns Hopkins University October 5, 2009 in Baltimore, Maryland. Greider, 48, was recognized by the Royal Swedish Academy of Sciences for her 1984 discovery of telomerase, an enzyme that maintains the length and intergrity of chromosome ends and is critical for the health and survivial of all living cells and organisms. Greider, the Daniel Nathans Professor and Director of Molecular Biology and Genetics in the Johns Hopkins Institute for Basic Biomedical Sciences, shares the prize with Professor Elizabeth Blackburn of the University of California and Jacks Szostack of Harvard Medical School.
  10. BALTIMORE - OCTOBER 05: Professor Carol Greider (R) sits with her children, Gwendolyn Comfort (L), 9, and Charles Comfort, 13, before a news conference where she talked about winning the 2009 Nobel Prize in Physiology or Medicine at Johns Hopkins University October 5, 2009 in Baltimore, Maryland. Greider, 48, was recognized by the Royal Swedish Academy of Sciences for her 1984 discovery of telomerase, an enzyme that maintains the length and intergrity of chromosome ends and is critical for the health and survivial of all living cells and organisms. Greider, the Daniel Nathans Professor and Director of Molecular Biology and Genetics in the Johns Hopkins Institute for Basic Biomedical Sciences, shares the prize with Professor Elizabeth Blackburn of the University of California and Jacks Szostack of Harvard Medical School.
  11. BALTIMORE - OCTOBER 05: Professor Carol Greider is interviewed by members of the news media after it was announced that she won the 2009 Nobel Prize in Physiology or Medicine at Johns Hopkins University October 5, 2009 in Baltimore, Maryland. Greider, 48, was recognized by the Royal Swedish Academy of Sciences for her 1984 discovery of telomerase, an enzyme that maintains the length and intergrity of chromosome ends and is critical for the health and survivial of all living cells and organisms. Greider, the Daniel Nathans Professor and Director of Molecular Biology and Genetics in the Johns Hopkins Institute for Basic Biomedical Sciences, shares the prize with Professor Elizabeth Blackburn of the University of California and Jacks Szostack of Harvard Medical School.
  12. BALTIMORE - OCTOBER 05: Professor Carol Greider attends a news conference where she talked about winning the 2009 Nobel Prize in Physiology or Medicine at Johns Hopkins University October 5, 2009 in Baltimore, Maryland. Greider, 48, was recognized by the Royal Swedish Academy of Sciences for her 1984 discovery of telomerase, an enzyme that maintains the length and intergrity of chromosome ends and is critical for the health and survivial of all living cells and organisms. Greider, the Daniel Nathans Professor and Director of Molecular Biology and Genetics in the Johns Hopkins Institute for Basic Biomedical Sciences, shares the prize with Professor Elizabeth Blackburn of the University of California and Jacks Szostack of Harvard Medical School.
  13. BALTIMORE - OCTOBER 05: Professor Carol Greider talks about the implications of her discovery during a news conference where she talked about winning the 2009 Nobel Prize in Physiology or Medicine at Johns Hopkins University October 5, 2009 in Baltimore, Maryland. Greider, 48, was recognized by the Royal Swedish Academy of Sciences for her 1984 discovery of telomerase, an enzyme that maintains the length and intergrity of chromosome ends and is critical for the health and survivial of all living cells and organisms. Greider, the Daniel Nathans Professor and Director of Molecular Biology and Genetics in the Johns Hopkins Institute for Basic Biomedical Sciences, shares the prize with Professor Elizabeth Blackburn of the University of California and Jacks Szostack of Harvard Medical School.
  14. BALTIMORE - OCTOBER 05: Professor Carol Greider (C) poses with her children, Gwendolyn Comfort, 9, and Charles Comfort, 13, after a news conference where she talked about winning the 2009 Nobel Prize in Physiology or Medicine at Johns Hopkins University October 5, 2009 in Baltimore, Maryland. Greider, 48, was recognized by the Royal Swedish Academy of Sciences for her 1984 discovery of telomerase, an enzyme that maintains the length and intergrity of chromosome ends and is critical for the health and survivial of all living cells and organisms. Greider, the Daniel Nathans Professor and Director of Molecular Biology and Genetics in the Johns Hopkins Institute for Basic Biomedical Sciences, shares the prize with Professor Elizabeth Blackburn of the University of California and Jacks Szostack of Harvard Medical School.
  15. BALTIMORE - OCTOBER 05: Professor Carol Greider (R) is interviewed by memebers of the news media after it was announced that she won the 2009 Nobel Prize in Physiology or Medicine at Johns Hopkins University October 5, 2009 in Baltimore, Maryland. Greider, 48, was recognized by the Royal Swedish Academy of Sciences for her 1984 discovery of telomerase, an enzyme that maintains the length and intergrity of chromosome ends and is critical for the health and survivial of all living cells and organisms. Greider, the Daniel Nathans Professor and Director of Molecular Biology and Genetics in the Johns Hopkins Institute for Basic Biomedical Sciences, shares the prize with Professor Elizabeth Blackburn of the University of California and Jacks Szostack of Harvard Medical School.
  16. BALTIMORE - OCTOBER 05: Professor Carol Greider is interviewed by members of the news media after it was announced that she won the 2009 Nobel Prize in Physiology or Medicine at Johns Hopkins University October 5, 2009 in Baltimore, Maryland. Greider, 48, was recognized by the Royal Swedish Academy of Sciences for her 1984 discovery of telomerase, an enzyme that maintains the length and intergrity of chromosome ends and is critical for the health and survivial of all living cells and organisms. Greider, the Daniel Nathans Professor and Director of Molecular Biology and Genetics in the Johns Hopkins Institute for Basic Biomedical Sciences, shares the prize with Professor Elizabeth Blackburn of the University of California and Jacks Szostack of Harvard Medical School.

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