title: Superfamily expands.
authors.forename: H C
authors.initials: HC
authors.lastname: Wang
authors.forename: J J
authors.initials: JJ
authors.lastname: Wu
authors.forename: P S
authors.initials: PS
authors.lastname: Tang
mesh_terms: D000595:Amino Acid Sequence; D001483:Base Sequence; D006801:Humans; D007135:Immunoglobulin Variable Region; D008969:Molecular Sequence Data; D012689:Sequence Homology, Nucleic Acid; D014764:Viral Proteins
chemical_list: D007135:Immunoglobulin Variable Region; D014764:Viral Proteins