title: Janus' faces of DNA sequence evolution.
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D000949:Histocompatibility Antigens Class II / Q000235:genetics*; D006801:Humans; D008969:Molecular Sequence Data; D010802:Phylogeny; D012689:Sequence Homology, Nucleic Acid
chemical_list: D000949:Histocompatibility Antigens Class II