HDAC11 and infection: Moreover, the ratio of HDAC11-S4 RNA 4, S4 RNA, and HDAC11 RNA in BmCPV-infected BmN cells at 48 h post-infection was estimated using RT-qPCR, and the results showed that HDAC11-S4 RNA4: S4 RNA: HDAC11 was 1:19:139, indicating that only a fraction of S4 RNA and HDAC11 RNA become chimeric RNAs.