title: The immunoglobulin superfamily takes shape.
mesh_terms: D000818:Animals; D005075:Biological Evolution; D002462:Cell Membrane / Q000276:immunology; D006801:Humans; D007136:Immunoglobulins / Q000235:genetics*; D008285:Major Histocompatibility Complex; D011971:Receptors, Immunologic / Q000235:genetics*
chemical_list: D007136:Immunoglobulins; D011971:Receptors, Immunologic