CXCL2 and CXCL9 in chemokine were 957.6-fold and 128.5-fold upregulated in the spleen at 48 h of infection; by 96 h, the higher expression levels were CsCCL21.2, TroCCL4.2, and CsCCK1 (Figure 9D). Here, CXCL2 is linked to infection.