title: MHC restriction, self-tolerance and the thymus.
mesh_terms: D002454:Cell Differentiation; D007108:Immune Tolerance; D007519:Isoantigens / Q000235:genetics; D008285:Major Histocompatibility Complex; D011828:Radiation Chimera; D013601:T-Lymphocytes / Q000276:immunology*; D013950:Thymus Gland / Q000276:immunology*
chemical_list: D007519:Isoantigens