title: The CD4 molecule. Roles in T lymphocytes and in HIV disease. Introduction.
authors.forename: D R
authors.initials: DR
authors.lastname: Littman
mesh_terms: D000818:Animals; D015704:CD4 Antigens / Q000502:physiology*; D015658:HIV Infections / Q000276:immunology*; D006801:Humans; D013601:T-Lymphocytes / Q000276:immunology*
chemical_list: D015704:CD4 Antigens