Washington University Medical School doctor working with patient, St. Louis, Missouri, 1945
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Photograph. Washington University Medical School doctor working with patient. Official Caption: "A doctor of the Washington University Medical School uses a so-called Geiger counter to measure, from the outside and practically without touching the patient, the relative amount of radioactive phosphorus deposited in the patient's liver during the treatment for a disease of the bone marrow. Most of the phosphorus is deposited in the marrow but an accurate check is necessary to avoid its excess in other organs. 6533-F." St. Louis, Missouri. 1945