I need to process Affymetrix CEL data with both hgu133a and hgu133a2 format with RMA. I found I need to use MixtureCDF to do this. I wonder who has this MixtureCDF for both hgu133a and hgu133a2. Any suggestions and advice will be highly appreciated. Jack Zhu Lombardi Cancer Center Georgetown University 3970 Reservoir Road New research Bldg. W401 Washington, DC 20007 Tel: (202) 687-7451 Fax: (202) 687-7505 E-mail: yz8 at georgetown.edu