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By mid-century, accounts of scientific discoveries and medical innovations were common in the popular press, as were biographical and fictional accounts of the lives of scientists and doctors. Paul de Kruif, the author of this article, was a popular writer and former scientist who had consulted extensively with Sinclair Lewis as Lewis wrote Arrowsmith (1925). De Kruif’s own book The Microbe Hunters was a bestseller, and his articles on new developments in medical science and health care appeared frequently in Readers Digest and other mass-circulation periodicals. This article, from 1945, tells of a physician’s unorthodox use of the new drug penicillin to treat a bacterial heart infection.

Read the full text of de Kruif's "Conquest of a Killer"...