CLEC4D and Salmonella Infections: For con vs 6 ‰-treated symptomatic fish, 6 pathways among 11 significantly enriched KEGG pathways were involved in immune response, which included NOD-like receptor signaling pathway (37 up-regulated and 13 down-regulated DEGs), c-type lectin receptor signaling pathway (25 up-regulated and 11 down-regulated DEGs), necroptosis (25 up-regulated and 15 down-regulated DEGs), toll-like receptor signaling pathway (13 up-regulated and 2 down-regulated DEGs), and salmonella infection (26 up-regulated and 14 down-regulated DEGs) (Figure 2G).