... Ito M, Tsutsumi Y, Ichikawa Y, Okuyama H, Brisibe EA, Sak-sena NK, Fujii YR: HIV-1 nef suppression by virally encodedmicroRNA. Retrovirology 2004, 1:44.80. Bennasser Y, Le SY, Yeung ML, Jeang ... RNA stability, despite imper-fect sequence homology [69,70]. Basically, the miRNAgenes are transcribed by RNA polymerase II into pri-mary(pri)-miRNA, which are cleaved by a nuclear RNAseIII, ... reported that the endogenous retrovirus gypsyis silenced in fly ovaries by the action of one argonauteprotein and that ovary cells naturally accumulate gypsy-derived small RNAs [48]. RNA silencing...