On Mon, 22 Jul 2002 15:58:10 GMT, "Dave Knorr" <dknorr at lynxgen.com> wrote: [...] >Diethyl pyrocarbonate at about 0.1% inactivates RNase and many other >proteins. And also modifies nucleic acids as well. NIck -- Nick Theodorakis nicholas_theodorakis at urmc.rochester.edu