Alexander Fleming Aug 1881-Mar 1945, born in Scoland, is the discoverer of penicillin in 1928.  It was finally tested, purified and in use in 1939.  Penicillin changed the course of medicine.  Fleming was knighted in 1944 and given the Nobel Prize in 1945.

Alexander Fleming Aug 1881-Mar 1945, born in Scoland, is the discoverer of penicillin in 1928. It was finally tested, purified and in use in 1939. Penicillin changed the course of medicine. Fleming was knighted in 1944 and given the Nobel Prize in 1945.

Excellent video on microbes  2012 Nobel Prize in Physiology or Medicine, Sir John B. Gurdon and Shinya Yamanaka

Excellent video on microbes 2012 Nobel Prize in Physiology or Medicine, Sir John B. Gurdon and Shinya Yamanaka

Elizabeth H. Blackburn - The Nobel Prize in Physiology or Medicine 2009 was awarded jointly to Elizabeth H. Blackburn, Carol W. Greider and Jack W. Szostak "for the discovery of how chromosomes are protected by telomeres and the enzyme telomerase".

Elizabeth H. Blackburn - The Nobel Prize in Physiology or Medicine 2009 was awarded jointly to Elizabeth H. Blackburn, Carol W. Greider and Jack W. Szostak "for the discovery of how chromosomes are protected by telomeres and the enzyme telomerase".

John O'Keefe, Prize share: 1/2. The Nobel Prize in Physiology or Medicine 2014. Photo: David Bishop, UCL.  "The Nobel Prize in Physiology or Medicine 2014". Nobelprize.org. Nobel Media AB 2014. Web. 6 Oct 2014. <http://www.nobelprize.org/nobel_prizes/medicine/laureates/2014/>

John O'Keefe, Prize share: 1/2. The Nobel Prize in Physiology or Medicine 2014. Photo: David Bishop, UCL. "The Nobel Prize in Physiology or Medicine 2014". Nobelprize.org. Nobel Media AB 2014. Web. 6 Oct 2014. <http://www.nobelprize.org/nobel_prizes/medicine/laureates/2014/>

The Nobel Prize in Physiology or Medicine 2014 was divided, one half awarded to John O'Keefe, the other half jointly to May-Britt Moser and Edvard I. Moser "for their discoveries of cells that constitute a positioning system in the brain." (Photo) Edvard I. Moser

The Nobel Prize in Physiology or Medicine 2014 was divided, one half awarded to John O'Keefe, the other half jointly to May-Britt Moser and Edvard I. Moser "for their discoveries of cells that constitute a positioning system in the brain." (Photo) Edvard I. Moser

50 years ago, James Watson, along with Francis Crick and Maurice Wilkins, were awarded the Nobel Prize in Physiology or Medicine "for their discoveries concerning the molecular structure of nucleic acids and its significance for information transfer in living material".

50 years ago, James Watson, along with Francis Crick and Maurice Wilkins, were awarded the Nobel Prize in Physiology or Medicine "for their discoveries concerning the molecular structure of nucleic acids and its significance for information transfer in living material".

Carol W. Greider - The Nobel Prize in Physiology or Medicine 2009 was awarded jointly to Elizabeth H. Blackburn, Carol W. Greider and Jack W. Szostak "for the discovery of how chromosomes are protected by telomeres and the enzyme telomerase".

Carol W. Greider - The Nobel Prize in Physiology or Medicine 2009 was awarded jointly to Elizabeth H. Blackburn, Carol W. Greider and Jack W. Szostak "for the discovery of how chromosomes are protected by telomeres and the enzyme telomerase".

George E. Palade  - Romanian-born American cell biologist who developed tissue-preparation methods, advanced centrifuging techniques, and conducted electron microscopy studies that resulted in the discovery of several cellular structures. With Albert Claude and Christian de Duve he was awarded the Nobel Prize for Physiology or Medicine in 1974.

George E. Palade - Romanian-born American cell biologist who developed tissue-preparation methods, advanced centrifuging techniques, and conducted electron microscopy studies that resulted in the discovery of several cellular structures. With Albert Claude and Christian de Duve he was awarded the Nobel Prize for Physiology or Medicine in 1974.

Ivan Petrovich Pavlov - (September 14, 1849 - February 27, 1936) - Russian physiologist. Known for classical conditioning and is famous for the "conditioned reflex".    Nobel prize in physiology or medicine 1904

Ivan Petrovich Pavlov - (September 14, 1849 - February 27, 1936) - Russian physiologist. Known for classical conditioning and is famous for the "conditioned reflex". Nobel prize in physiology or medicine 1904

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