title: Deoxyribonucleic acid secondary structure in the region of the replication point.
mesh_terms: D001412:Bacillus subtilis; D002499:Centrifugation, Density Gradient; D003377:Countercurrent Distribution; D004269:DNA, Bacterial / Q000096:biosynthesis*; D004926:Escherichia coli; D005823:Genetics; D013936:Thymidine / Q000378:metabolism; D014316:Tritium
chemical_list: D004269:DNA, Bacterial; D014316:Tritium; D013936:Thymidine