title: Column chromatography on polyethylenimine-silica: rapid resolution of nucleotides and proteins with short columns and low pressures.
mesh_terms: D002852:Chromatography, Ion Exchange / Q000379:methods; D009711:Nucleotides / Q000032:analysis*; D011094:Polyethyleneimine; D011095:Polyethylenes; D011312:Pressure; D011506:Proteins / Q000032:analysis*; D058428:Silica Gel; D012822:Silicon Dioxide
chemical_list: D009711:Nucleotides; D011095:Polyethylenes; D011506:Proteins; D058428:Silica Gel; D012822:Silicon Dioxide; D011094:Polyethyleneimine