The Influence of Feed Supplementation with Kynurenine Acid (Kyna) on the Gills in Rainbow Trout (Oncorhynchus mykiss) Infected Experimentally with Yersinia ruckeri. Issue 1 (January 2017) - Kaczorek, E.; Terech-Majewska, E.; Szarek, J.; Mikiewicz, M.; Schulz, P.; Małaczewska, J.; Wójcik, R.; Pajdak, J.; Siwicki, A.K.