3.4.21.9	carcinoma cell	-	732698	
3.4.21.9	commercial preparation	-	718352	
3.4.21.9	duodenal juice	-	732698	
3.4.21.9	duodenum	-	667758, 684030, 732698, 95565, 95572, 95573, 95574, 95575, 95581	
3.4.21.9	duodenum	duodenal enterocytes are the major type of cells expressing enterokinase	95576	
3.4.21.9	duodenum	duodenal fluid	95573, 95579	
3.4.21.9	duodenum	duodenal mucosa	95570	
3.4.21.9	duodenum	duodenal mucosal fluid adhering to the intestinal wall	95567	
3.4.21.9	duodenum	localized in the brush-border of the enterocytes lining the duodenum and the first 10-20 cm of the small intestine	95565	
3.4.21.9	duodenum	mucosa	717409, 718100, 95584	
3.4.21.9	duodenum	mucosa of the first and second portion of the duodenum	95580	
3.4.21.9	duodenum	the enterokinase molecule from the mucosal fluid is identical with that found previously in the mucosal cells but differs from that in the intestinal contents	95567	
3.4.21.9	epidermis	-	732698	
3.4.21.9	epithelial cell	-	732698	
3.4.21.9	intestine	-	716743, 718359	
3.4.21.9	jejunum	jejunal mucosa	95580	
3.4.21.9	pancreas	-	717431	
3.4.21.9	small intestine	-	732698, 732803, 95576	
3.4.21.9	small intestine	enterokinase is expressed in the proximal part, the heavy chain anchors the enzyme in the intestinal brush border membrane	717891