Antigen recognition.
D000818:Animals; D017951:Antigen Presentation; D015395:Histocompatibility Antigens Class I / Q000276:immunology; D000949:Histocompatibility Antigens Class II / Q000276:immunology; D006801:Humans; D015778:Minor Histocompatibility Antigens / Q000276:immunology
D015395:Histocompatibility Antigens Class I; D000949:Histocompatibility Antigens Class II; D015778:Minor Histocompatibility Antigens