1. Department of Biosystems and Soft Matter Institute of Fundamental Technological Research Polish Academy of Sciences Warsaw 02‐106 Poland
2. Department of Nanobiotechnology Institute of Biology Warsaw University of Life Sciences Warsaw 02‐787 Poland
3. Department of Engineering and Technology of Polymers Wrocław University of Science and Technology Wrocław 50‐370 Poland
4. Laboratory for Regenerative Medicine Department of Neurosurgery School of Medicine University of Warmia and Mazury in Olsztyn Olsztyn 10‐082 Poland
5. Laboratory of Polymers and Biomaterials Institute of Fundamental Technological Research Polish Academy of Sciences Warsaw 02‐106 Poland