SANTA CLARA, Calif.--Affymetrix announced that six institutes of the US National Institutes of Health have agreed to a broad GeneChip technology access contract. They include: the National Cancer Institute; the National Heart, Lung, and Blood Institute; the National Institute of Allergy and Infectious Diseases; the National Institute of Arthritis and Musculoskeletal and Skin Diseases; the National Institute of Child Health and Human Development; and, the National Institute of Health Clinical Center.