Studies on Metabolism of Vitamin A. 4. Studies on the Mode of Absorption of Vitamin a by Rat Intestine in Vitro

In the preceding paper (Mahadevan, Seshadri Sastry & Ganguly, 1963) experiments with living animals have shown that vitamin A esters are hydrolysed and resynthesized during absorption. In this paper, where experiments conducted in vitro with everted intestinal sacs of rats are described, further evidence is produced to show that prior hydrolysis of vitamin A esters is essential for the