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. 2009 Dec 2;84(9):4116–4123. doi: 10.1128/JVI.01905-09

FIG. 2.

FIG. 2.

Modulation of viral gene expression. Viruses utilize reversible chromatin modifications to control transcription of viral genes. Viral transcription is active when associated with euchromatin and repressed when coupled to heterochromatin. Alternatively, host and/or viral miRNAs can be used to control production of viral proteins through translational repression or cleavage of viral mRNA. RISC, RNA-induced silencing complex.