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: Microbiology
The immunoassay performed in HIV to detect the presence of antibodies to individual viral proteins is 
Select and explain. 
A. NASBA, B. ELISA, C. Western Blot, D. PCR
C: Western Blot
Answer: C: Western Blot 
Explanation: None