title: Evolutionary divergence of immunoglobulin constant region genes.
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D005075:Biological Evolution; D005796:Genes; D007141:Immunoglobulin Fc Fragments / Q000032:analysis; D007136:Immunoglobulins / Q000032:analysis / Q000096:biosynthesis*; D046911:Macromolecular Substances; D008970:Molecular Weight; D008121:Nephropidae / Q000276:immunology
chemical_list: D007141:Immunoglobulin Fc Fragments; D007136:Immunoglobulins; D046911:Macromolecular Substances