title: The persistence in Xenopus laevis DNA of O6-methylguanine produced by exposure to N-methyl-N-nitrosourea.
mesh_terms: D000818:Animals; D004247:DNA / Q000378:metabolism*; D005260:Female; D006147:Guanine / Q000031:analogs & derivatives / Q000378:metabolism*; D007668:Kidney / Q000378:metabolism; D008099:Liver / Q000378:metabolism; D008770:Methylnitrosourea / Q000494:pharmacology*; D009607:Nitrosourea Compounds / Q000494:pharmacology*; D014981:Xenopus / Q000378:metabolism*
chemical_list: D009607:Nitrosourea Compounds; D006147:Guanine; D008770:Methylnitrosourea; D004247:DNA