Berlin-Brandenburg Center for Regenerative Therapies, Charité-Universitätsmedizin Berlin, 13353 Berlin, Germany and Seoul National University, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul 151-742, Republic of Korea.|Berlin-Brandenburg Center for Regenerative Therapies, Charité-Universitätsmedizin Berlin, 13353 Berlin, Germany and Seoul National University, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul 151-742, Republic of Korea.|Berlin-Brandenburg Center for Regenerative Therapies, Charité-Universitätsmedizin Berlin, 13353 Berlin, Germany and Seoul National University, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul 151-742, Republic of Korea.|Berlin-Brandenburg Center for Regenerative Therapies, Charité-Universitätsmedizin Berlin, 13353 Berlin, Germany and Seoul National University, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul 151-742, Republic of Korea Berlin-Brandenburg Center for Regenerative Therapies, Charité-Universitätsmedizin Berlin, 13353 Berlin, Germany and Seoul National University, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul 151-742, Republic of Korea.