Nutrition and host defense mechanisms.
D000949:Histocompatibility Antigens Class II / Q000276:immunology*; D006801:Humans; D008214:Lymphocytes / Q000276:immunology; D008264:Macrophages / Q000276:immunology; D009504:Neutrophils / Q000276:immunology; D009748:Nutrition Disorders / Q000276:immunology*
D000949:Histocompatibility Antigens Class II