title: Survey of quality assurance/quality control practices for CD4+ lymphocyte counting.
authors.affiliation: Duke University Medical Center, Durham, North Carolina 27710, USA.
authors.forename: J A
authors.initials: JA
authors.lastname: Koepke
mesh_terms: D018791:CD4 Lymphocyte Count; D005434:Flow Cytometry / Q000379:methods / Q000592:standards*; D006801:Humans; D011786:Quality Control; D011933:Reagent Kits, Diagnostic; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires
chemical_list: D011933:Reagent Kits, Diagnostic