VISTA, Calif.--(BUSINESS WIRE)--A global leader in digital pathology for the healthcare and life sciences industry, Aperio now has an installed base of more than 250 systems in 23 countries, including more than half of the top 13 pharmaceutical companies and more than two-thirds of the top 14 rated U.S. hospitals, per the 2006 U.S. News & World Report, Best Hospitals. Among some of the hospitals and health systems using Aperio are Duke University Medical Center, Massachusetts General Hospital, Mayo Clinic, and Stanford Hospitals and Clinics. A partial list of pharmaceutical customers includes Novartis, GlaxoSmithKline, Eli Lilly, Sanofi-Aventis and Amgen.