Newly declassified Japanese military documents have confirmed that Japan's Unit 731 conducted gruesome live human experiments by transfusing animal blood into living prisoners of war. Released and verified by the Exhibition Hall of the Crimes of Unit 731 in Harbin, Heilongjiang Province, the first-hand academic records serve as ironclad wartime-published evidence that refutes attempts to whitewash Japan's wartime atrocities.

Dated to 1938, the cruel experiments targeted 23 Chinese POWs, using fresh blood from five types of animals: horses, sheep, dogs, rabbits and chickens. The findings were officially presented in March 1940 at a military medical research conference organized by the Medical Affairs Bureau of the Japanese Army Ministry and published in the Journal of the Japanese Army Medical Corps (Issue 327) on August 1, 1940.

Authored by Japanese Army Senior Colonel Tsutomu Saito, the paper titled Research on Heterologous Blood Transfusion for Acute Massive Hemorrhage documented the extreme torture of the victims. Japanese researchers drained each subject of 1,200 to 2,500 milliliters of blood, leaving them unconscious, severely cyanotic, gasping for breath and on the verge of death.

After forced heterologous blood transfusion, all victims suffered violent acute immune rejection, including hematuria, high fever and chills. To observe vascular changes, Japanese doctors cut open victims' necks, clamped their carotid arteries and directly injected animal serum into living arteries. They also injected chicken blood into victims and conducted three consecutive days of microscopic examinations, tracing unique nucleated chicken red blood cells within human bodies.

Researchers confirmed the academic records perfectly match postwar oral testimonies from a former Unit 731 serum squad leader, forming a complete evidence loop. Shockingly, these inhumane human experiment results were publicly released in official Japanese medical journals, proving such war crimes were an open secret in Japan's wartime medical community.

According to statistics, 41 core Unit 731 members, including Shiro Ishii and Masaji Kitano, published 187 papers on bacterial warfare and live human experiments in the same journal, exposing the systematic, institutionalized and large-scale nature of Japan's state-sponsored medical atrocities during World War II.