Confusingly, STAT3-regulated Bcl-2, a proto-oncogene associated with lymphocytomas, did not show differential expression after ALV-A rHB2015012 infection, nor did it show differential expression after STAT3 overexpression and interference, possibly because of the incompatibility of the cells used in the study or to the virus itself. The gene discussed is BCL2; the disease is pseudolymphoma.