Dhar, ADas, G CChaudhuri, U1972-09-012009-05-271972-09-012009-05-271972-09-01Dhar A, Das GC, Chaudhuri U. Characterization of escherichia coli DNA by hydroxyapatite column, electron microscopy and viscosity. Indian Journal of Biochemistry & Biophysics. 1972 Sep; 9(3): 254-8http://imsear.searo.who.int/handle/123456789/28617engChromatographyDNA, Bacterial --isolation & purificationDeoxyribonucleasesEscherichia coli --analysisHydroxyapatitesMicroscopy, ElectronMolecular WeightViscosityJournal Article