TY - JOUR A1 - Schweigert, Florian J. A1 - Gottwald, C. T1 - Effect of parturition on levels of vitamins A and E and of ß-carotene in plasma and milk of mares Y1 - 1999 ER - TY - JOUR A1 - Schweigert, Florian J. A1 - Bonitz, K. A1 - Siegling, Christiane A1 - Buchholz, Ingeborg T1 - Distribution of vitamin A, retinol-binding protein (RBP), cellular retinoic acid binding protein (CRABPI) and retinoid X receptor ß (RXRß) in the porcine uterus during early gestation Y1 - 1999 ER -