Weiner A M, Maizels N
Department of Molecular Biophysics and Biochemistry, Yale University School of Medicine, New Haven, Connecticut 06510-8024.
Curr Biol. 1994 Jun 1;4(6):560-3. doi: 10.1016/s0960-9822(00)00126-3.
Studies of a small circular plasmid found in the mitochondria of the fungus Neurospora crassa shed unexpected light on the evolution of RNA viruses into retroviruses.