title: Identification of macrophages and of a T-lymphocytes subpopulation in normal human lymphnode by histochemical demonstration of alpha-naphthyl-acetate-esterasic activity.
abstract: The cell population of normal human lymphnode was studied by a histochemical technique showing alpha-naphthyl-acetate-esterasic activity. Two distinct cell populations were evidenced: a) macrophagic cells, bearing a diffused ANAE cytoplasmic positivity, most of which were in the subcapsular area, whereas a minority of them was found within the lymphatic nodules and the paracortical area; b) lymphocytic cells, bearing on ANAE positive cytoplasmic spot, most of which were in the paracortical area, whereas a minority of them was found within the lymphatic nodules. A discussion of the results we got, as compared with those which are reported by literature, confirms what is already well-known about the cell colonization of the various areas in the lymphnode. Besides it gives a chance to identify lymphocytes bearing an ANAE positive cytoplasmic spot with T lymphocytes belonging to the "helper-inducer" subclass.
mesh_terms: D006801:Humans; D008198:Lymph Nodes / Q000166:cytology*; D008264:Macrophages / Q000032:analysis* / Q000201:enzymology; D009283:Naphthol AS D Esterase / Q000032:analysis; D013601:T-Lymphocytes / Q000032:analysis* / Q000201:enzymology
chemical_list: D009283:Naphthol AS D Esterase