Salk, plot of ground working at the Virus Research Lab at the University of Pittsburgh, developed a polio vaccine, and the medical trials to prove its military strength and safety are still being analyzed. Fifty years ago the largest medical experiment in history took rank to test Salks poliomyelitis vaccine. Close to two meg children across the United States and Canada were involved in the trial, which was administered by the topic Foundation for Infantile Paralysi...If you want to get a good essay, order it on our website: Ordercustompaper.com
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