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35, in anatomy section of KIU Medical School since before the war, was a lecturer, became assistant professor in 1943, was absent from January to March 1942, January to March 1944, November 1945 to February 1946, has not worked since July 1946 because of TB and kidney and bladder trouble. Hirako was in charge of the anatomy section, Ishizawa was immediately under him and Tanaka was next senior. Hirako told Tanaka that the PWs that Tanaka saw at KIU were from a B-29 that was shot down. Tanaka recognized the PWs as of Caucasian ancestry. The 1st time was in late April 1945, when he saw one Prisoner in the autopsy training room, then went to his office for about 40 minutes, then returned to see a lung operation performed, then left after 20 minutes to see his wife in hospital and returned about 1730 with Makino. Goshima and Ryu were there. Makino and Tanaka worked together, took out small specimens from the intestines, stomach, bladder, liver, kidney, supr renal gland. Makino removed specimens from the lung, heart, and possibly the esophagus and trachea. None of the specimens were larger than an inch each way. They wanted healthy specimens, and this Prisoner did not a[[ear to be diseased. The organs from which Tanaka removed specimens were healthy. Tanaka put his specimens in Bouin and Zenker solution with the intention of making slides later. Tanaka changed the solution daily for 2 weeks, then put the specimens in a paraffin solution to set them so that slides could be made. Tanaka then became ill, was absent until February 1946. When he returned, he threw all his specimens away. Makino was leaving form home shortly after they took the specimens, and he said he would take some with him and leave the rest. Tanaka doesn't know what he did with them. Goshima took some parts from the wrist of the Prisoner, and he and Ryu were going to remove the brain. Ryu injected Mueller Solution into a large blood vessel in the Prisoner's neck, which ruined the rest of the body for specimens, and Makino and Tanaka left. The body was still on the dissecting table when they left. There were no shoes or shirt on the body; there were trousers and sox, the trousers unbuttoned. The Prisoner was tall, slender, had red hair; Tanaka heard he was 23. Tanaka recalls someone making a suggestion that the details of the operation be written. Goshima and Ryu were the only 2 left in the operating room when Tanaka left. About 4 days later 3 more operations were performed, on an abdominal operation, one a liver operation. Makino and Tanaka again took specimens from the Prisoner subjected to the abdominal operation while the liver operation was still going on, and during which a 3rd Prisoner was brought in. This time Tanaka took the entire salivary glands, the testicles (which were diseased) and the thyroid gland. Makino took the lachrymal glands and, Tanaka believes, other parts of the head. They left while the operation was still in progress. Tanaka preserved the specimens in the same way as the first time, through them away in February 1946. Later, in early June 1945, Tanaka was again informed of operations on PWs, went to the anatomy room by himself, saw 2 Prisoners, one already dead, and Makino and Goshima were taking specimens from the body. The other was being operated on. Tanaka went over to Makino and Goshima, took the testicles from the body. Makino was taking out spinal nerve ganglion and said he was going to take out the spinal cord, which is quite difficult unless the head is cut off. (Tanaka heard that the other operation was on the brain) Makino gave Tanaka a piece of the nerve ganglion he had taken, then left, throwing theses specimens away in February 1946. Makino and Goshima were still there. All of the bodies were still on the operating table, except the last time, when Tanaka left. He went into the room 2-3 days later (after the last time?) and saw the feet of a prisoner in a coffin, did not stop. Tanaka was never the last to leave the room. Tanaka never saw Hirako in the autopsy room during these operations. Tanaka saw 1, 3, and 2 operations; Hirao told him there were 2 more. Hirako was in charge of the crematory. Some liaison may have been established between him and the army for cremation; he would be the one responsible for accounting for the bodies.
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This book documents the legal proceedings of the December 1949 Khabarovsk trial in which twelve members of the Japanese Army's covert biological warfare Unit 731 were prosecuted for their war crimes. The trial sought to hold key leaders in Japan's bio-weapons program accountable for atrocities after WWII.