title: Heterogeneity in nucleotide composition of Bacillus subtilis DNA.
mesh_terms: D000225:Adenine / Q000032:analysis; D001412:Bacillus subtilis / Q000032:analysis; D002499:Centrifugation, Density Gradient; D003596:Cytosine / Q000032:analysis; D004269:DNA, Bacterial / Q000032:analysis*; D006147:Guanine / Q000032:analysis; D008970:Molecular Weight; D009711:Nucleotides / Q000032:analysis*; D010759:Phosphorus Isotopes; D013941:Thymine / Q000032:analysis
chemical_list: D004269:DNA, Bacterial; D009711:Nucleotides; D010759:Phosphorus Isotopes; D006147:Guanine; D003596:Cytosine; D000225:Adenine; D013941:Thymine