title: Thymectomy and immunological ageing in mice: precocious emergence of scrapie-like antigen.
mesh_terms: D000375:Aging; D000818:Animals; D000941:Antigens; D001921:Brain / Q000276:immunology*; D002464:Cell Migration Inhibition; D006168:Guinea Pigs; D007109:Immunity; D008214:Lymphocytes / Q000276:immunology; D008264:Macrophages / Q000276:immunology; D051379:Mice; D012608:Scrapie / Q000276:immunology*; D012756:Sheep; D013934:Thymectomy
chemical_list: D000941:Antigens