title: Analysis and purification of biological stains by gel filtration.
mesh_terms: D002850:Chromatography, Gel; D002852:Chromatography, Ion Exchange; D004396:Coloring Agents / Q000302:isolation & purification*; D004126:Dimethylformamide; D000431:Ethanol; D008722:Methods; D008970:Molecular Weight; D012116:Resins, Plant; D012997:Solvents
chemical_list: D004396:Coloring Agents; D012116:Resins, Plant; D012997:Solvents; D000431:Ethanol; D004126:Dimethylformamide