1. Department of Anatomy and Physiology, Midwest Institute for Comparative Stem Cell Biology, Kansas State University, Manhattan, KS 66506, USA
2. The New York Stem Cell Foundation, New York, NY 10023, USA
3. Rubius Therapeutics, Cambridge, MA 02139, USA
4. Institute of Bioprocess Engineering and Pharmaceutical Technology, University of Applied Sciences Mittelhessen, 35390 Giessen, Germany
5. Faculty of Biology and Chemistry, Justus Liebig University Giessen, 35390 Giessen, Germany