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Prisoner volunteers, such as these at the U.S. Penitentiary in Seagonville, Texas, were used to test drugs against malaria…
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Prisoner volunteers, such as these at the U.S. Penitentiary in Seagonville, Texas, were used to test drugs against malaria in the 1940s ( 1948) . Original public domain image from Flickr

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Prisoner volunteers, such as these at the U.S. Penitentiary in Seagonville, Texas, were used to test drugs against malaria in the 1940s ( 1948) . Original public domain image from Flickr

More