RNA INTERFERENCE. Interfering RNA RNAi _ stage 1. Penetration of a virus orange in a human cell_host blue to replicate. The interfering RNA is a mean for the cell to destroy the RNA parasites viruses RNA, transposons. A proteic complex, associated to a fragment of RNA, slinks to the molecule of the virus RNA or transposon. The latter is then cut by the endonuclease activity of RISC cleavage then destroyed. The cell then eliminates all foreign RNA. RNA interference is currently under study to tur