Ultrastructural Identification of Calbindin-D28k-Immunoreactive Cells in the Rat Superficial Pineal Body

Abstract
The vitamin-D-dependent calcium-binding protein, calbindin-D28k, was detected immunocytochemically in the majority of pericapillary pinealocytes of the rat superficial pineal body. The interstitial cells were calbindin -negative.The significance of these findings is discussed.