The small intestinal flora of vervet monkeys (Cercopithecus aethiops) was
examined before and after feeding elemental diet and after ligation of the pancreatic duct.
Elemental diet did not produce significant changes of the intestinal microbial flora. However,
an increase of the microbial count consisting mainly of Enterobacteriaceae, molds
and yeasts was observed in the duct-ligated animals, significantly more pronounced than in
the sham-operated controls. The data confirm previous studies demonstrating the possible
role of the exocrine pancreas in the maintenance of a normal intestinal flora.