Figure 5 Manometric tracings of the same individual showing the effects of intravenous (iv) infusion of saline (left panel) and exendin(9‐39)NH2 300 pmol/kg/min (right panel) during duodenal glucose perfusion at 1 kcal/min. With iv saline, duodenal glucose at 1 kcal/min exerted inhibition of antral motility, tonic elevation in basal pyloric pressure (arrow), and induced isolated pyloric pressure waves. With iv ex(9‐39)NH2, marked antral contractility was observed leading to two aborally propagated antral phase IIIs. TMPD, transmucosal potential difference.