title: Gel filtration of lignosulphonic acids and peptide-precipitating abilities of the separated fractions.
mesh_terms: D011232:Chemical Precipitation; D002850:Chromatography, Gel; D008031:Lignin / Q000302:isolation & purification*; D008970:Molecular Weight; D010455:Peptides; D013451:Sulfonic Acids / Q000302:isolation & purification*
chemical_list: D010455:Peptides; D013451:Sulfonic Acids; D008031:Lignin