Someone here mentioned that there's an S1 nuclease assay (RNA quantitation, instead of Northerns) - who makes it? Is it worth getting? I just ran through the latest Natures and Cells and didn't see an ad . . . Ian -- Ian York (york at mbcrr.harvard.edu) Dana-Farber Cancer Institute, 44 Binney St., Boston MA 02115 Phone (617)-632-3921 Fax (617)-632-2627