title: Mutagenesis and conjugation in Rhizobium trifolii.
mesh_terms: D003227:Conjugation, Genetic; D003433:Crosses, Genetic; D003470:Culture Media; D008722:Methods; D009154:Mutation / Q000187:drug effects / Q000528:radiation effects; D009604:Nitrosoguanidines / Q000494:pharmacology; D010641:Phenotype; D011830:Radiation Effects; D011995:Recombination, Genetic; D012231:Rhizobium / Q000254:growth & development*; D013559:Symbiosis; D014466:Ultraviolet Rays
chemical_list: D003470:Culture Media; D009604:Nitrosoguanidines