title: Antibody diversity, histocompatibility systems, disease states, and ageing.
mesh_terms: D000375:Aging; D000818:Animals; D000906:Antibodies; D004194:Disease; D006648:Histocompatibility; D006706:Homeostasis; D006801:Humans; D007125:Immunogenetics; D008962:Models, Theoretical; D009154:Mutation
chemical_list: D000906:Antibodies