title: Immunology. Tolerance: a second mechanism.
authors.forename: A L
authors.initials: AL
authors.lastname: DeFranco
mesh_terms: D000818:Animals; D007108:Immune Tolerance / Q000235:genetics / Q000276:immunology*; D008214:Lymphocytes / Q000276:immunology; D051379:Mice; D008822:Mice, Transgenic; D008954:Models, Biological