title: A longitudinal study of cellular immunity in male homosexuals in London.
mesh_terms: D006562:Herpes Zoster / Q000276:immunology; D006716:Homosexuality; D006801:Humans; D006968:Hypersensitivity, Delayed; D007111:Immunity, Cellular; D007958:Leukocyte Count; D008131:London; D008137:Longitudinal Studies; D008214:Lymphocytes / Q000276:immunology*; D008297:Male; D006377:T-Lymphocytes, Helper-Inducer / Q000276:immunology; D050378:T-Lymphocytes, Regulatory / Q000276:immunology