...) ureolysis is in contrast to other observations on the intact colon. The possible reasons for and implications of this discrepancy are discussed. 15 8 1974 © 1975 The Biochemical Society and the Medical Research Society 1975 excluded colon ureolysis ammonia absorption non-ionic...

... on the basis of increased chloride-bicarbonate exchange. 4. Potassium secretion increased with a reduction in luminal pH, possibly as a result of the low pH increasing mucosal permeability. 5. It is concluded that the excluded colon in these patients provides a valid model for studies of normal colonic...