1. Department of Physiology, University of Pennsylvania, Philadelphia, PA 19104, USA
2. Peter-Debye Institute for Soft Matter Physics, Leipzig University, 04103 Leipzig, Germany
3. Inventages, 16 Northfields Prospect Business Centre, Putney Bridge Rd, London SW181PE, UK
4. Fraunhofer Institute for Cell Therapy and Immunology, 04103 Leipzig, Germany
5. Unconventional Computing Lab, Department of Computer Science and Creative Technologies, University of the West of England, Bristol BS16 1QY, UK