title: Permanent abolition of reactivity to major histocompatibility antigens requires elimination of prethymic precursors.
mesh_terms: D000818:Animals; D000961:Antilymphocyte Serum / Q000494:pharmacology; D016026:Bone Marrow Transplantation; D006649:Histocompatibility Antigens / Q000276:immunology*; D008198:Lymph Nodes / Q000166:cytology; D009026:Mortality; D011828:Radiation Chimera; D051381:Rats; D011917:Rats, Inbred Lew; D013154:Spleen / Q000166:cytology; D013601:T-Lymphocytes / Q000276:immunology*; D013950:Thymus Gland / Q000276:immunology* / Q000473:pathology
chemical_list: D000961:Antilymphocyte Serum; D006649:Histocompatibility Antigens