title: CTLA-4: not all costimulation is stimulatory.
authors.affiliation: National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA. auchinclossh@niaid.nih.gov
authors.forename: Hugh
authors.initials: H
authors.lastname: Auchincloss
authors.forename: Laurence A
authors.initials: LA
authors.lastname: Turka
mesh_terms: D000486:Allergy and Immunology / Q000266:history*; D000818:Animals; D060908:CTLA-4 Antigen / Q000266:history* / Q000276:immunology; D049673:History, 20th Century; D006801:Humans; D008213:Lymphocyte Activation; D013601:T-Lymphocytes / Q000276:immunology*
chemical_list: D060908:CTLA-4 Antigen