In a secret deal struck between September 1945 and November 1948, Fort Detrick of the U.S. Army spent 250,000 yen, several thousand U.S. dollars at that time, obtaining data and medical papers on human experiments, bacterial tests, germ warfare, and toxic gas experiments conducted by Unit 731, according to Jin Chengmin, curator of the Museum of Evidence of War Crimes by the Japanese Army Unit 731.
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