3.4.21.9	-	653769, 732551, 95567, 95570, 95572, 95573, 95574, 95575, 95579, 95581, 95584	
3.4.21.9	amylose affinity column chromatography	753127	
3.4.21.9	anion exchange chromatography	669550	
3.4.21.9	by gel filtration	696841	
3.4.21.9	His-Tag affinity chromatography	668257	
3.4.21.9	HisTrap chelating column chromatography	753320	
3.4.21.9	HiTrap Q column chromatography	752564	
3.4.21.9	native enzyme from duodenal mucosa by anion exchange and benzoamidine affinity chromatography, followed by hydrophobic interaction chromatography and gel filtration	718100	
3.4.21.9	Ni-NTA column chromatography,	732803	
3.4.21.9	Ni2+ affinity chromatography	667026