Vitamin D-Induced Calcium-Binding Protein of Intestinal Muscosa

Abstract
As a result of time studies (0–48 hr) with rachitic chicks given crystalline vitamin D3 at a dose range of 0–100,000 IU, it has been possible to establish a correlation between a change in calcium absorption (duodenal loops) and the appearance and relative amount of the vitamin D-induced calcium-binding protein in mucosal tissue. Although it is not yet known where and by what mechanism CaBP functions at a cellular level, available evidence is fully consistent with a role of CaBP in calcium transport.