1. Department of Histology and Cytophysiology, Medical University of Bialystok, Mickiewicza 2C, 15-222 Białystok, Poland
2. Nencki Institute of Experimental Biology, Laboratory of Calcium Binding Proteins, 02-093 Warsaw, Poland
3. Department of Human Physiology, Faculty of Medical Sciences, University of Warmia and Mazury in Olsztyn, 10-082 Olsztyn, Poland