title: BIOLOGICAL STRUCTURE.
mesh_terms: D001669:Biochemical Phenomena; D001671:Biochemistry; D001695:Biology; D004247:DNA; D004279:DNA, Viral; D009154:Mutation; D012313:RNA; D012367:RNA, Viral; D012106:Research; D014764:Viral Proteins; D014780:Viruses
chemical_list: D004279:DNA, Viral; D012367:RNA, Viral; D014764:Viral Proteins; D012313:RNA; D004247:DNA
keywords: BIOCHEMISTRY; BIOLOGY; DNA, VIRAL; EXPERIMENTAL LAB STUDY; MUTATION; RNA, VIRAL; VIRAL PROTEINS; VIRUSES