Immunoreactive pancreatic secretory trypsin inhibitor in normal, inflammatory and neoplastic gallbladders

Operative specimens from normal, inflammatory and neoplastic gallbladders were analyzed for immunoreactive pancreatic secretory trypsin inhibitor (irPSTI) using a peroxidase-antiperoxidase method. In normal and inflammatory gallbladders no irPSTI was demonstrated, while irPSTI was found in neoplastic gallbladders.