title: DNA fractionation by two-phase partition with aid of a base-specific macroligand.
mesh_terms: D000818:Animals; D001482:Base Composition; D002417:Cattle; D005591:Chemical Fractionation / Q000379:methods; D004247:DNA / Q000302:isolation & purification*; D003911:Dextrans; D008024:Ligands; D011092:Polyethylene Glycols; D011700:Putrescine; D012996:Solutions; D014867:Water
chemical_list: D003911:Dextrans; D008024:Ligands; D012996:Solutions; D014867:Water; D011092:Polyethylene Glycols; D004247:DNA; D011700:Putrescine