title: The origins of the adaptive immune system: whatever next?
authors.forename: Jim
authors.initials: J
authors.lastname: Kaufman
mesh_terms: D000818:Animals; D005075:Biological Evolution; D004447:Echinodermata / Q000276:immunology; D005803:Genes, Immunoglobulin; D007109:Immunity / Q000235:genetics; D007135:Immunoglobulin Variable Region / Q000235:genetics*; D005810:Multigene Family; D011971:Receptors, Immunologic / Q000276:immunology
chemical_list: D007135:Immunoglobulin Variable Region; D011971:Receptors, Immunologic