One way that viral elements are expressed are as transposons. There is even an infectious variant, a gypsy transposon, that can move to neighboring cells. htt

One way that viral elements are expressed are as transposons. There is even an infectious variant, a gypsy transposon, that can move to neighboring cells. https://en.m.wikipedia.org/wiki/Transposable_element https://en.m.wikipedia.org/wiki/Transposable_element