A subset of genes including OAS1, OAS2, EFNB2, and CKS1B involved in the immune response to viral infection showed a higher expression level (Figure 5C) and H3K4me3 enrichment (Figure 5D) in PEDV-infected samples, suggesting the role of H3K4me3 deposition in promoting their expression. The gene discussed is OAS1; the disease is viral infectious disease.