in ewew fitted with a cerebro-ventricular cannula and equipped with extra-cellular bipolar electrodes on the antrum and proximal small intestine , an intraventricular injection of morphine at a dose ( 40 micrograms/kg ) ineffective peripherally was followed within 1 min by an increased spike activity of the duodenum without disruption of the occurrence of migrating myoelectric complexes .
C0021852
small intestine
C0013303
duodenum