title: FRACTIONATION OF DNA. II. PARTIAL STRAND SEPARATION AS A BASIS OF FRACTIONATION BY COUNTERCURRENT DISTRIBUTION.
mesh_terms: D001412:Bacillus subtilis; D001669:Biochemical Phenomena; D001671:Biochemistry; D002247:Carbon Isotopes; D002623:Chemistry Techniques, Analytical; D003377:Countercurrent Distribution; D004247:DNA; D004269:DNA, Bacterial; D004926:Escherichia coli; D005557:Formaldehyde; D006358:Hot Temperature; D008099:Liver; D009705:Nucleosides; D012106:Research; D013936:Thymidine; D014316:Tritium; D014461:Ultracentrifugation
chemical_list: D002247:Carbon Isotopes; D004269:DNA, Bacterial; D009705:Nucleosides; D014316:Tritium; D005557:Formaldehyde; D004247:DNA; D013936:Thymidine
keywords: BACILLUS SUBTILIS; BIOCHEMISTRY; CARBON ISOTOPES; CHEMISTRY, ANALYTICAL; COUNTERCURRENT DISTRIBUTION; DNA; DNA, BACTERIAL; ESCHERICHIA COLI; EXPERIMENTAL LAB STUDY; FORMALDEHYDE; HEAT; LIVER; NUCLEOSIDES; THYMIDINE; TRITIUM; ULTRACENTRIFUGATION