to examine the effect of proximal small intestinal stimulants of gastric acid secretion in cirrhotic patients with portacaval shunt , unshunted cirrhotics , and normal subjects , a mixture of l-amino acids was administered intraduodenally , into the proximal jejunum , or intravenously to 8 cirrhotic patients with portacaval shunt and to 8 unshunted subjects ( 4 cirrhotic and 4 healthy volunteers ) .
C0021852
small intestinal
C0022378
jejunum