title: [Viroid: molecular structure and its replication].
mesh_terms: D003001:Cloning, Molecular; D005814:Genes, Viral; D010957:Plasmids; D012313:RNA / Q000096:biosynthesis; D014772:Viroids / Q000235:genetics* / Q000502:physiology; D014779:Virus Replication
chemical_list: D012313:RNA