Finnegan D J
Institute of Cell and Molecular Biology, University of Edinburgh, UK.
Curr Biol. 1994 Jul 1;4(7):641-3. doi: 10.1016/s0960-9822(00)00142-1.
Recent studies of genetically unstable strains of Drosophila suggest that retroviruses are not confined to vertebrates and indicate how they might be derived from transposable elements.