Figure 1From: Gene bi-targeting by viral and human miRNAsFour scenarios for miRNA involvement in host-virus interactions. (1) Viral miRNAs inhibit the expression of viral mRNAs. (2) Host miRNAs inhibit the expression of viral mRNAs. (3) Viral miRNAs inhibit the expression of host mRNAs. (4) Host miRNAs inhibit the expression of host mRNAs. In this case, viruses may regulate host miRNA expression and indirectly regulate host gene expression. (This figure is partially adapted from [81].)Back to article page