Folia Biologica
Journal of Cellular and Molecular Biology, Charles University 

Eva Petrovová¹, D. Sedmera^2,3, I. Míšek⁴, F. Lešník⁴, L. Luptáková¹

¹Department of Biology and Genetics, University of Veterinary Medicine in Košice, Košice, Slovak Republic
²Charles University in Prague, First Faculty of Medicine, Institute of Anatomy, Prague, Czech Republic
³Institute of Animal Physiology and Genetics, Prague, Czech Republic
⁴Institute of Animal Physiology and Genetics, Brno, Czech Republic

Received August 2008
Accepted January 2009