title: Flow cytometric three-color determination of CD4 T-lymphocytes on blood specimens from AIDS patients who have a large number of contaminating non-lymphocytes.
abstract: A three-color flow cytometric determination of CD4 T-lymphocytes on whole blood specimens from AIDS patients which contain a high proportion of non-lymphocyte elements is described. Peripheral blood cells were stained by a three-color method using monoclonal antibodies conjugated respectively with fluorescein isothiocyanate (FITC)-CD3, phycoerythrin (PE)-CD4 and peridinin chlorophyll protein (PerCP)-CD45. CD45 stains all leukocytes with the highest fluorescence expression of CD45 antigen in lymphocytes. By combining light scatter with CD45 in the fluorescence 3 (FL3) channel, a light scattering window can be drawn to include almost all bright CD45 lymphocytes. This live gate of lymphocytes was then acquired and analysed simultaneously using other irrelevant two-color (FITC/PE) antibodies of CD3 and CD4 in the FITC and PE channels, respectively. This method is easy and straightforward, and gives successful analysis of CD4 T-lymphocytes in AIDS blood specimens contaminated with an unusually large number of non-lymphocytic cells.
authors.affiliation: Thalassemia Center, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand.
authors.forename: K
authors.initials: K
authors.lastname: Pattanapanyasat
authors.forename: V
authors.initials: V
authors.lastname: Pengruangrojanachai
authors.forename: C
authors.initials: C
authors.lastname: Thepthai
authors.forename: S
authors.initials: S
authors.lastname: Suwanagool
authors.forename: C
authors.initials: C
authors.lastname: Wasi
mesh_terms: D000163:Acquired Immunodeficiency Syndrome / Q000097:blood* / Q000276:immunology; D000911:Antibodies, Monoclonal; D017252:CD3 Complex / Q000032:analysis; D015704:CD4 Antigens / Q000032:analysis; D018791:CD4 Lymphocyte Count / Q000379:methods; D015496:CD4-Positive T-Lymphocytes / Q000276:immunology*; D005434:Flow Cytometry / Q000379:methods*; D005456:Fluorescent Dyes; D006679:HIV Seropositivity / Q000097:blood* / Q000276:immunology; D006801:Humans; D016130:Immunophenotyping; D017493:Leukocyte Common Antigens / Q000032:analysis; D008297:Male
chemical_list: D000911:Antibodies, Monoclonal; D017252:CD3 Complex; D015704:CD4 Antigens; D005456:Fluorescent Dyes; D017493:Leukocyte Common Antigens