IL17A and rheumatoid arthritis: DECs of the top 10 most abundant KEGG pathways are shown in Figure 2B. Six of the 10 pathways were detected at both 6 and 24 hpi, including cytokine-cytokine receptor interaction, viral protein interaction with cytokine and cytokine receptor, chemokine signaling pathway, Rheumatoid arthritis, IL–17 signaling pathway, and TNF signaling pathway.