title: Complementation characteristics of newly isolated mutants from two groups of strains of Clostridium perfringens.
abstract: 1. Mutants of a group were converted to b group by a second NG treatment. The resulting b group mutants could not produce the marker products that had been lost on the first NG treatment but could produce the others by complementation. 2. Mutants of b group were converted to constitutive mutants by a second NG treatment. No back mutation from b group was observed.
mesh_terms: D001427:Bacterial Toxins / Q000096:biosynthesis / Q000235:genetics*; D003016:Clostridium perfringens / Q000235:genetics*; D005798:Genes, Bacterial; D005809:Genes, Regulator; D005816:Genetic Complementation Test; D005819:Genetic Markers; D006388:Hemagglutinins / Q000235:genetics; D006460:Hemolysin Proteins; D009154:Mutation
chemical_list: D001427:Bacterial Toxins; D005819:Genetic Markers; D006388:Hemagglutinins; D006460:Hemolysin Proteins; C020452:Clostridium perfringens theta-toxin