title: Structural features of DNA in competent Bacillus subtilis.
mesh_terms: D000900:Anti-Bacterial Agents; D001412:Bacillus subtilis / Q000166:cytology*; D002499:Centrifugation, Density Gradient; D055598:Chemical Phenomena; D002621:Chemistry; D002875:Chromosomes; D004269:DNA, Bacterial; D005796:Genes; D005827:Genetics, Microbial; D005838:Genotype; D008954:Models, Biological; D014170:Transformation, Genetic; D014316:Tritium
chemical_list: D000900:Anti-Bacterial Agents; D004269:DNA, Bacterial; D014316:Tritium