title: Sequences conserved in the defective interfering RNAs of Semliki Forest virus: an electron microscopic heteroduplex analysis.
mesh_terms: D000818:Animals; D002460:Cell Line; D003673:Defective Viruses / Q000235:genetics*; D008854:Microscopy, Electron; D009692:Nucleic Acid Heteroduplexes; D012367:RNA, Viral / Q000648:ultrastructure*; D012672:Semliki forest virus / Q000235:genetics*
chemical_list: D009692:Nucleic Acid Heteroduplexes; D012367:RNA, Viral