1. Institute of Cytology, Russian Academy of Science, Tikhoretskiy Prospect 4, 194064 St. Petersburg, Russia
2. Vreden National Medical Research Center of Traumatology and Orthopedics, National Medical Research Center, Street Academician Baykova, 8, 195427 St. Petersburg, Russia
3. Stem Cell Bank Pokrovsky, Bolshoi Prospect V.O., 85, 199106 St. Petersburg, Russia