This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Sexual offences and infanticide, Subject name: Forensic Medicine
[{'content': 'To find out whether the stain is human or not the following test is done \nSelect and explain. \nA. Florence test, B. Takayamma test, C. Precipitant test, D. Barberios test', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Precipitin test This is a precipitation reaction by antigen and antibody. Human blood is injected into a rabbit every third day for 3-5 times. After this the animal is kiledk and the antiserum is collected. This is used for precipitin test to find out a paicular tissue or stain is human or not. Ref: FORENSIC MEDICINE AND TOXICOLOGY Dr PC IGNATIUS THIRD EDITION PAGE 318', 'role': 'assistant'}]