I always found it to difficult to compensate PI out of the orange channel. I don't know if 7AAD DNA profiles are to lousy, but I always wondered if there is a possibility of just reducing the PI intensity by mixing the PI with a competing molecule that does either is just not fluorescent quenches of causes energy transfer. Perhaps Howard could shed some light on that. Gerhard Nebe-v.Caron Unilever Research, Colworth, Sharnbrook, Bedfordshire GB - MK44 1LQ Tel: +44(0)1234-222066 FAX: +44(0)1234-222344 gerhard.nebe-von-caron@unilever.com ______________________________ Reply Separator _________________________________ Subject: Two antigens plus DNA staining Author: ratech@aecom.yu.edu at INTERNET Date: 15/01/97 03:10 Hi Flowers: We have a project in which we would like to study DNA ploidy plus protein expression of two nuclear antigens. Our intrumentation is limited to a FACSCAN. I assume that we will start by using FITC and propidium idodide. But what, if any, is your recommendation for a third color? Is this feasible with the limitation of our instrument? Thanks. Howard Ratech, MD Albert Einstein College of Medicine/ Montefiore Medical Center Bronx, New York ratech@aecom.yu.edu
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