Hi I need help to find a suitable thiol reagent to form a coupling between goat anti-mouse IgM (miu chain) and bare gold surface. It would be great if anybody can tell me how to select thiol reagents in this kind of situation. I am having problem in immobilizing this antibody on the gold surface . Any help would be appreciated Thank you Santanu Chandra __________________________________ Do you Yahoo!? Read only the mail you want - Yahoo! Mail SpamGuard. http://promotions.yahoo.com/new_mail