The transcription start time of BmNPV ORF120 is 6 h p.i., and that of BmNPV iap1 is 12 h p.i. [50], which can interpret why the extent of G2/M phase arrest induced by BmNPV infection was much greater than that by induced by overexpressing BmNPV iap1 (Figure 1A,B and Figure 5A,B). Here, BIRC3 is linked to infection.