DEPs in Avian broilers and Pengxian yellow chickens after ALV-J infection were involved in viral myocarditis, transcriptional misregulation in cancer, primary immunodeficiency, natural killer cell-mediated cytotoxicity, and intestinal immune network for IgA production such as ZYX, SNRNP40, and BLB (Table 5) (Figure 11 (A)). The gene discussed is SNRNP40; the disease is cancer.