SPUTNIK / SCIENCE PHOTO LIBRARY SPUTNIK / SCIENCE PHOTO LIBRARY
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Dorothy Hodgkin (1910-1994)., British chemist and X-ray crystallographer. Hodgkin (nee Crowfoot) was a pioneer of using the X-ray diffraction method for determining the structure of biomolecules. She discovered the structure of penicillin in 1945 and that of vitamin B12 in 1956, for which she was awarded the Nobel Prize in Chemistry in 1964. In 1972 she described the structure of insulin, a large and complex molecule with 800 atoms, a project she had started in the 1930s. Photographed at the All-Union Scientists' Conference against the Threat of Nuclear War, for Disarmament and Peace, Moscow, Russia, in 1983.
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