title: Identification of resting human T and B lymphocytes by acid alpha-naphthyl acetate esterase staining combined with rosette formation with Staphylococcus aureus strain Cowan 1.
abstract: We describe a method enabling the identification of both lymphocyte class and morphology from a single microscopic slide. As a marker for B cells we used surface immunoglobulin. The surface-Ig-carrying cells were rosetted after poly-valent anti-Ig treatment with Staphylococcus aureus strain Cowan 1 (StaCw) and the cells were cytocentrifuged onto a microscope slide. The lymphocytes forming rosettes with StaCw were identical with cells expressing surface Ig studied by fluorescein-isothiocyanate-conjugated anti-Ig. As a marker for T cells we used the acid alpha-naphthyl acetate esterase (ANAE) histochemical marker. The cell smears were first stained for ANAE and subsequently counterstained to distinguish also cell morphology. The ANAE-marker-carrying cells were all included in the population of lymphocytes forming rosettes with sheep erythrocytes. Thus both T and B lymphocytes could be simultaneously identified from a single microscopic slide, and we therefore recommend the method for routine clinical work.
mesh_terms: D001402:B-Lymphocytes / Q000276:immunology*; D004950:Esterases; D005455:Fluorescent Antibody Technique; D006801:Humans; D007104:Immune Adherence Reaction; D009280:Naphthaleneacetic Acids; D011947:Receptors, Antigen, B-Cell / Q000032:analysis; D013194:Staining and Labeling; D013211:Staphylococcus aureus / Q000276:immunology*; D013601:T-Lymphocytes / Q000276:immunology*
chemical_list: D009280:Naphthaleneacetic Acids; D011947:Receptors, Antigen, B-Cell; D004950:Esterases