Development of an in vitro Model for Bovine Placentation: A Comparison of the in vivo and in vitro Expression of Integrins and Components of Extracellular Matrix in Bovine Placental Cells. - Zeiler, M.; Leiser, R.; Johnson, G. A.; Tinneberg, H.-R.; Pfarrer, C. (Cells Tissues Organs, 2007)