title: S-R dissociation in Shigella flexneri populations. I. The genetic mechanism of development of rough forms.
mesh_terms: D001431:Bacteriological Techniques; D002999:Clone Cells; D003078:Colchicine / Q000494:pharmacology; D014644:Genetic Variation / Q000187:drug effects / Q000528:radiation effects; D005827:Genetics, Microbial; D009153:Mutagens / Q000494:pharmacology; D009154:Mutation / Q000187:drug effects / Q000528:radiation effects; D009573:Nitrites / Q000494:pharmacology; D011830:Radiation Effects; D012760:Shigella / Q000187:drug effects / Q000528:radiation effects; D014466:Ultraviolet Rays
chemical_list: D009153:Mutagens; D009573:Nitrites; D003078:Colchicine