1. Department of Experimental Oncology, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, 53‑114 Wroclaw, Poland
2. Faculty of Veterinary Medicine, Wroclaw University of Environmental and Life Sciences, 50-375 Wroclaw, Poland
3. Department of Pharmacology, Pharmaceutical Research Institute, 01-793 Warsaw, Poland
4. Universit� Clermont Auvergne, INRA, UNH, F-63000 Clermont-Ferrand, France