Biological and Physicochemical Characterization of a Serum-and Xeno-Free Chemically Defined Cryopreservation Procedure for Adult Human Progenitor Cells oleh Steffen M. Zeisberger, Julia C. Schulz, Mario Mairhofer, Peter Ponsaerts, Guy Wouters, Daniel Doerr, Alisa Katsen-Globa, Martin Ehrbar, Jurgen Hescheler, Simon P. Hoerstrup, Andreas H. Zisch, Andrea Kolbus, Heiko Zimmermann