chIRAP overexpression significantly inhibited the proliferation of VSV-EGFP, NDV-rL-EGFP and NDV-Na-EGFP, and reduced viral infection 87.3-fold, 6.87-fold, and 24.84-fold, respectively (Fig 3D), and inhibited the expression level of H9N2 IAV HA protein (Fig 3E), suggesting it also has an inhibitory effect on H9N2 IAV. The gene discussed is XK; the disease is viral infectious disease.