A 42-year old man was referred with a 2 week history of fever weakness and bleeding gum.Peripherial smear showed pancytopenia.The bone marrow examination revealed 26% blasts frequently exhibiting Auer rods and mature myeloid cells.An occasional neutrophil with pseudo Pelger-Huet anomaly was also noted:Which of the following cytocheimcal stains is most likely to be positive?

A 42-year old man was referred with a 2 week history of fever weakness

1.	A 42-year old man was referred with a 2 week history of fever weakness and bleeding gum.Peripherial smear showed pancytopenia.The bone marrow examination revealed 26% blasts frequently exhibiting Auer rods and mature myeloid cells.An occasional neutrophil with pseudo Pelger-Huet anomaly was also noted:Which of the following cytocheimcal stains is most likely to be positive?
A.	Acid phosphatase
B.	Non specific esterase
C.	Myeloperoxidase
D.	Toluidine blue
Answer» D. Toluidine blue