title: Methylation of mu2 bacteriophage ribonucleic acid by the carcinogen N-methyl-N-nitrosourea: evidence for O-methylation.
mesh_terms: D000225:Adenine / Q000032:analysis; D001435:Bacteriophages; D002247:Carbon Isotopes; D006151:Guanosine / Q000032:analysis; D008745:Methylation; D009603:Nitroso Compounds; D009607:Nitrosourea Compounds; D009705:Nucleosides / Q000032:analysis; D012367:RNA, Viral / Q000032:analysis; D014508:Urea
chemical_list: D002247:Carbon Isotopes; D009603:Nitroso Compounds; D009607:Nitrosourea Compounds; D009705:Nucleosides; D012367:RNA, Viral; D006151:Guanosine; D014508:Urea; D000225:Adenine