Histocompatibility restriction explained.
D000818:Animals; D000938:Antigen-Presenting Cells / Q000502:physiology*; D006649:Histocompatibility Antigens / Q000502:physiology*; D006801:Humans; D011971:Receptors, Immunologic / Q000276:immunology*; D013601:T-Lymphocytes / Q000276:immunology*
D006649:Histocompatibility Antigens; D011971:Receptors, Immunologic