During the Sino-Japanese War, several Japanese military units conducted unethical experiments on patients involving blood transfusions from animals or preserved blood. While the aim was to treat wounded soldiers on the battlefield, ethical concerns were overlooked due to difficulties in securing blood supplies. As a result of these experiments, some patients died immediately after the transfusion, experiencing severe side effects. It is analyzed that the medical staff's eagerness to support the war effort weakened ethical constraints against unethical experimentation.
