title: The early phylogenetic origin of antibody gene structure and function.
mesh_terms: D000818:Animals; D000906:Antibodies / Q000235:genetics*; D007143:Immunoglobulin Heavy Chains / Q000235:genetics; D007135:Immunoglobulin Variable Region / Q000235:genetics; D005810:Multigene Family; D010802:Phylogeny; D011995:Recombination, Genetic; D014714:Vertebrates / Q000235:genetics / Q000276:immunology
chemical_list: D000906:Antibodies; D007143:Immunoglobulin Heavy Chains; D007135:Immunoglobulin Variable Region