title: Enzymehistochemical staining of T mu lymphocytes for glycyl-proline-4-methoxy-beta-naphthylamide-peptidase (DAP IV).
abstract: Human T mu lymphocytes are detected in a histochemical reaction with glycyl-proline-4-methoxy-beta-naphthylamide-peptidase (DAP IV; EC 3.4.14.4). DAP IV occurs in 59.4 +/- 8.25 of human T lymphocytes in blood and marrow. Direct biochemical assays were in accord with the cytochemical findings. DAP IV-positive lymphocytes accounted for 89.5 +/- 0.6% of T-lymphocytes bearing Fc receptor for IgG contained 11.3 +/- 8.3% T-lymphocytes bearing Fc receptor for IgM.
mesh_terms: D002469:Cell Separation; D018819:Dipeptidyl Peptidase 4; D004152:Dipeptidyl-Peptidases and Tripeptidyl-Peptidases / Q000378:metabolism*; D010450:Endopeptidases / Q000378:metabolism*; D006651:Histocytochemistry; D006801:Humans; D007124:Immunoenzyme Techniques; D007958:Leukocyte Count; D011961:Receptors, Fc / Q000032:analysis; D013601:T-Lymphocytes / Q000145:classification / Q000201:enzymology* / Q000276:immunology
chemical_list: D011961:Receptors, Fc; D010450:Endopeptidases; D004152:Dipeptidyl-Peptidases and Tripeptidyl-Peptidases; D018819:Dipeptidyl Peptidase 4