title: CD4 immunophenotyping in HIV infection.
mesh_terms: D018791:CD4 Lymphocyte Count / Q000379:methods; D015658:HIV Infections / Q000175:diagnosis* / Q000276:immunology*; D006801:Humans; D016130:Immunophenotyping / Q000379:methods*; D016131:Lymphocyte Subsets / Q000276:immunology*