"Clonal selection and after," and after.
D000818:Animals; D001327:Autoimmune Diseases / Q000276:immunology; D016026:Bone Marrow Transplantation; D006087:Graft vs Host Reaction; D006801:Humans; D007111:Immunity, Cellular; D007694:Killer Cells, Natural / Q000276:immunology; D007938:Leukemia / Q000276:immunology / Q000628:therapy; D051379:Mice; D013601:T-Lymphocytes / Q000276:immunology*; D014184:Transplantation, Homologous; D014185:Transplantation, Isogeneic