title: Combined mutagenesis by UV light and nitrosomethylurea of Streptomyces hygroscopicus spores.
mesh_terms: D004269:DNA, Bacterial / Q000528:radiation effects; D008770:Methylnitrosourea; D009154:Mutation / Q000187:drug effects / Q000528:radiation effects; D009607:Nitrosourea Compounds; D010957:Plasmids / Q000187:drug effects / Q000528:radiation effects; D013171:Spores, Bacterial / Q000187:drug effects / Q000528:radiation effects; D013302:Streptomyces / Q000187:drug effects / Q000528:radiation effects; D014466:Ultraviolet Rays
chemical_list: D004269:DNA, Bacterial; D009607:Nitrosourea Compounds; D008770:Methylnitrosourea