This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Haematology, Subject name: Pathology
Non specific esterase is positive in all the categories of AML except- 
Select and explain. 
A. M3, B. M4, C. M5, D. M6
D: M6
Answer: D: M6 
Explanation: M6 is positive for periodic acid Schiff in the case of erythroblasts and myeloperoxidase in the case of myeloblasts. Reference: textbook of Pathology 6th edition Author Harsh Mohan, page number 364.