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
To find out whether the stain is human or not the following test is done 
Select and explain. 
A. Florence test, B. Takayamma test, C. Precipitant test, D. Barberios test
C: Precipitant test
Answer: C: Precipitant test 
Explanation: 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