Reward

Since 1929, stubborn-jawed Dr. Claude Heman Barlow has been studying bilharziasis, a disease of the bladder caused by snail-borne parasites common in Egypt. In 1944, he infected himself with the parasites (TIME, Dec. 6, 1946). The experiment cost him his own health, but it gave science some valuable clues for controlling the disease. This week Dr. Barlow, 71, received the Medal of Merit from President Truman.

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