Analysis of the inflammation-related genes expression after immunizing Slp mouse serum and challenging bacteria in C. auratus. *p < 0.05, **p < 0.01 (compared with control). Most of the mRNA expression of IL-6, IL-8, IL-1β and TNF-α decreased (p < 0.05) in the kidney and spleen after being challenged with A. hydrophila (A) and P. fluorescens (B).