Marta Kot1, Martine Daujat-Chavanieu2. 1. Institute of Pharmacology, Polish Academy of Sciences, 31-343, Kraków, Smętna Street 12, Poland. Electronic address: kot@if-pan.krakow.pl. 2. Institute for Regenerative Medicine and Biotherapy, Univ Montpellier, Inserm U1183, CHU Montpellier, Montpellier, France.