the pancreatic stone protein ( psp ) isolated from calculi ( mr 14,000 ) and the 5 protein forms ( psp s1-5 ) detected in pancreatic juice ( mr 14,000-19,000 ) derive from the same source differing seemingly in their carbohydrate contents or/and in their polypeptidic chain lengths .
C0033684
protein
C0075269
psp