Figure 7. Effect of pancreaticojejunostomy (PJ) on interstitial pH (pHI) in established chronic pancreatitis. PJ improves basal pHI, but cholecystokinin (CCK) stimulation has no effect on pHI, either 2 (PJ4/2) or 4 (PJ4/4) weeks after decompression. Black bar, pre-CCK; gray bar, post-CCK. * p < 0.05 vs. basal, # p < 0.01 vs. control.