Abstract

A cytochemical study of 54 cases of acute leukemia utilizing the periodic acid-Schiff reaction for glycogen and Oil Red O for neutral fat was performed on air dried bone marrow smears. The majority of leukemic lymphoblasts revealed significant amounts of glycogen and neutral fat. "Blast" cells in granulocytic leukemia were devoid of glycogen and of neutral fat. The recommendation is made that both of these histochemical stains be employed to attempt to resolve the problem of specific cellular identification in acute leukemia.

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