This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Forensic Medicine
Choline in seminal fluid is detected by ? 
Select and explain. 
A. Barberio test, B. Florence test, C. ELISA, D. Agglutination inhibition
B: Florence test
Answer: B: Florence test 
Explanation: Ans. is 'b' i.e., Florence test Microchemical tests for semen analysisFlorence test - Brown crystals of choline periodideBarberio's test - Yellow coloured crystals of spermin picrate.