National Institutes of Health: federal focal point for medical research in the U.S.
College of American Pathologists: medical society serving physician members and the laboratory community.
Lab Tests Online: a public resource on clinical lab testing from laboratory professionals who do the testing.
Web medicine: consumer medical resource
WebMD: consumer focused healthcare information web site.
Health Answers: marketing solutions company producing results oriented strategies, products and services for pharmaceutical companies, biotechnology companies and professional medical associations.
Centers for Disease Control and Prevention: federal agency protecting the health and safety of people at home and abroad.
GeneTests - GeneClinics web site: publicly funded medical genetics information resource developed for physicians, healthcare providers and researchers.