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57989 Pathology

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 revelaed 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 cytochemical stains is most likely to be positive –

AAcid phosphatase
BNon specific esterase
CMyeloperoxidase
DToluidine blue.
Pathology
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