The company DIATEC.COM has made a slide show (Powerpoint) on monoclonal antibodies and their use in flow cytometry. It is free for download and non-commercial use. You can review it and download it at the following WEB-adress: Go to: http://www.diatec.com then select the NEWS button On the NEWS page go down to #6 and click on Diatec Slide Show. BjornP