title: Pyrimidine clusters in the deoxyribonucleic acid of Azotobacter vinelandii.
mesh_terms: D001395:Azotobacter / Q000032:analysis*; D004269:DNA, Bacterial / Q000032:analysis*; D011743:Pyrimidines / Q000032:analysis*
chemical_list: D004269:DNA, Bacterial; D011743:Pyrimidines