Factors influencing the uptake of [125I]polyvinyl pyrrolidone by the intestine of the young rat

Abstract
1. The uptake of orally administered [125I]polyvinyl pyrrolidone (PVP) of mean mol. wt. 160,000 (K. 60) by the small intestine of young rats was determined 4 hr after feeding by measurement of the radioactivity remaining in the wall after flushing out the intestinal contents.