title: Surrogate markers of immune function in human immunodeficiency virus-infected patients: what are they surrogates for?
authors.forename: Richard L
authors.initials: RL
authors.lastname: Hengel
authors.forename: Joseph A
authors.initials: JA
authors.lastname: Kovacs
mesh_terms: D015415:Biomarkers / Q000032:analysis; D018791:CD4 Lymphocyte Count; D015496:CD4-Positive T-Lymphocytes / Q000276:immunology; D015658:HIV Infections / Q000097:blood / Q000276:immunology*; D006801:Humans; D012367:RNA, Viral / Q000097:blood
chemical_list: D015415:Biomarkers; D012367:RNA, Viral