Articles citing this paper

^A Department of large Animal Sciences, Section for Veterinary Reproduction and obstestrics, University of Copenhagen, Frederiksberg, Denmark;

^B Department of Veterinary Clinical and Animal Sciences, University of Copenhagen, Frederiksberg, Denmark;

^C Friedrich-Loeffler-Institut, Neustadt, Germany;

^D Department of Histology and Embryology, Ankara University, Faculty of Veterinary Medicin, Ankara, Turkey