This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Parasitology Pa 1 (Protozoology), Subject name: Microbiology
The following tests help in lab diagnosis of Kala azar except - 
Select and explain. 
A. Bone marrow examination, B. Immobilization test, C. Blood smear examination, D. Aldehyde test
B: Immobilization test
Answer: B: Immobilization test 
Explanation: All other tests are used except Immobilization test. Lab diagnosis :-