M. Zhang,¹ E.G. Bromfield,^1,2 T. Veenendaal,³ J. Klumperman,³ J.B. Helms,¹ B.M. Gadella<sup>1,4,*

1</sup>Department of Biomolecular Health Sciences, Faculty of Veterinary Medicine, Utrecht University, The Netherlands
²Priority Research Centre for Reproductive Science, University of Newcastle, New South Wales, Australia
³Section Cell Biology, Center for Molecular Medicine, University Medical Center Utrecht, Utrecht University, The Netherlands
⁴Department of Farm Animal Health, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands

^*Correspondence: Yalelaan 2, 3584 CM Utrecht, The Netherlands. Tel: +31-30-2535386; E-mail: b.m.gadella@uu.nl