To examine the expression status of HCPro1 and HCPro2 in the context of viral infection, two recombinant virus clones, termed pRS-G-MycHCPro1 and pRS-G-MycHCPro2, in which a Myc-tag was fused to the N-terminus of either HCPro1, or HCPro2, respectively, were developed (Figure 1A). This evidence concerns the gene MYC and viral infectious disease.