Ultrastructural identification of neoplastic histiocytes--monocytes: an application of a newly developed cytochemical technique.

Abstract

We applied a newly developed ultrastructural cytochemical technique utilizing 2-naphthyl thiol acetate (NTA) as a substrate in 3 cases of true histiocytic-monocytic malignancy and 3 controls. The enzyme NTA esterase was identified in both neoplastic and benign histiocytes-monocytes in the form of electron-dense material within the cytoplasm. The NTA… (More)

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