DEPs in Pengxian yellow chickens and Tibetan chickens after ALV-J infection were involved in viral myocarditis, Th1 and Th2 cell differentiation, MAPK signaling pathway, inflammatory bowel disease, HTLV-I infection, graft-versus-host disease, autoimmune thyroid disease, and antigen processing and presentation such as BLBII, BF2, CREBBP, and NCOR1 (Table 5) (Figure 11 (C)). The gene discussed is FOXG1; the disease is graft versus host disease.