title: Peptides in positive and negative selection: a delicate balance.
authors.affiliation: Department of Pathology, Washington University, St. Louis, Missouri 63110.
authors.forename: P M
authors.initials: PM
authors.lastname: Allen
mesh_terms: D000818:Animals; D015395:Histocompatibility Antigens Class I / Q000502:physiology; D000949:Histocompatibility Antigens Class II / Q000502:physiology; D006801:Humans; D008024:Ligands; D010455:Peptides / Q000276:immunology*; D011948:Receptors, Antigen, T-Cell / Q000502:physiology*; D013601:T-Lymphocytes / Q000276:immunology*; D013950:Thymus Gland / Q000166:cytology
chemical_list: D015395:Histocompatibility Antigens Class I; D000949:Histocompatibility Antigens Class II; D008024:Ligands; D010455:Peptides; D011948:Receptors, Antigen, T-Cell