Rouget P, Parodi A, Blangy D, Cuzin F
J Virol. 1976 Oct;20(1):9-13. doi: 10.1128/JVI.20.1.9-13.1976.
Polyoma virus particles purified from infected cells, but not from the culture medium, exhibited an endonuclease activity distinct from the serum contaminant recently described. This endonuclease cleaved form I polyoma DNA once only per molecule, at one of three possible sites corresponding to the known adenosine-ribosylthymine-rich regions of the molecule.