Serum pepsinogen levels: relation to gastric secretion and gastric biopsy.
D001706:Biopsy; D004792:Enzyme Precursors / Q000097:blood*; D005750:Gastric Juice; D006801:Humans; D020116:Pepsinogen A; D010435:Pepsinogens; D013270:Stomach / Q000473:pathology*
D004792:Enzyme Precursors; D010435:Pepsinogens; D020116:Pepsinogen A
ENZYME PRECURSORS/in blood; GASTRIC JUICE; STOMACH/pathology