Figure 1.
Biogenesis of microRNAs. Processing of both host miRNAs (violet) and virus-encoded miRNAs (blue) is assumed to occur through the same pathway. The arrows (pink) indicate the effects of cellular miRNAs on their own cellular transcripts as well as on viral transcripts. The violet arrow shows the effects of virus-encoded miRNAs on both cellular and viral transcripts. Both these arrows suggest possible miRNA-mediated interactions between viruses and their hosts.
