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
Rabies diagnosis is done best by: 
Select and explain. 
A. Brain biopsy, B. Blood culture, C. Electron microscopy, D. None
A: Brain biopsy
Answer: A: Brain biopsy 
Explanation: Ans. a. Brain biopsy