title: Comparison of fractionation methods for DNA of varying base composition by equilibrium density-gradient centrifugation.
mesh_terms: D001665:Binding Sites; D002478:Cells, Cultured; D002499:Centrifugation, Density Gradient / Q000379:methods; D004247:DNA / Q000302:isolation & purification*; D003609:Dactinomycin; D006801:Humans; D007202:Indicators and Reagents; D008628:Mercury; D012834:Silver; D013045:Species Specificity; D014461:Ultracentrifugation / Q000379:methods
chemical_list: D007202:Indicators and Reagents; D003609:Dactinomycin; D012834:Silver; D004247:DNA; D008628:Mercury