in 19 healthy male volunteers , a 5-lumen tube with two balloons was inserted into the colon by the endoscopic retrograde bowel insertion ( erbi ) method and a 25 cm segment of either the right or the left colon was perfused with an isotonic electrolyte solution simulating the fasting ileal content at a rate of 5 ml/min .
C0009368
colon
C0227388
left colon