1. Institute of Ichthyobiology and Aquaculture; Polish Academy of Sciences; Chybie Poland
2. Department of Fish Diseases; National Veterinary Research Institute in Puławy; Puławy Poland
3. Institute of Bioorganic Chemistry; Polish Academy of Sciences; Poznań Poland
4. Fish Disease Research Unit; University of Veterinary Medicine; Hannover Germany
5. Department of Evolutionary Immunology; Institute of Zoology and Biomedical Research; Jagiellonian University; Kraków Poland