SANTA CLARA, Calif.--Affymetrix said it has chosen four new AcademicAccess customers to which it will provide volume discount pricing for GeneChip technology. The new customers are the University of Wisconsin, the University of Colorado, the Canadian Genetic Diseases Network, and the H. Lee Moffitt Cancer Center. Under the agreements, the academic centers may purchase standard Affymetrix expression GeneChip probe arrays derived from public databases as well as custom GeneChip products based on any gene sequence available to the institution.