title: Gnotobiological models and methods in immunology.
mesh_terms: D000375:Aging; D000818:Animals; D005856:Germ-Free Life; D007108:Immune Tolerance; D007109:Immunity; D007113:Immunity, Innate; D007136:Immunoglobulins / Q000096:biosynthesis; D007239:Infections / Q000276:immunology; D008954:Models, Biological
chemical_list: D007136:Immunoglobulins