Hello netters, I would like to separate and retain ssDNA from a mixture of ssDNA and dsDNA which is in aqueous solution. The ssDNA I particularly want to keep is a 50-55mer. Does anybody have any ideas? Jurgen Jurgen Sasse email:js1 at mole.bio.cam.ac.uk Dept. Pathology Tel:01223/333718 Cambridge Univ. Cambridge, UK e