Blue Cross/Blue Shield Body Atlas
CDC Center for Disease Control and Prevention
Cleveland Clinic
Dr. Koop.com
Drug InfoNet
Emedicine
Family Practice Notebook
Health on the Net (Medical Images and Videos)
Healthfinder
Johns Hopkins Medicine
Journal of the American Medical Association
Life Expectancy
Mayo Clinic
Also see: http://www.mayoclinic.com
Medical Encyclopedia (from the National Library of Medicine)
MedicalTerms.com
MedLine Plus
MedScape (registration free)
Merck Manual of Medical Information
National Cancer Institute
National Institutes of Health
National Library of Medicine
New England Journal of Medicine
On Line Medical Journals (via Merck Medicus)
PDR Family Guide to Prescription Drugs
Pub Med
RxList: The Internet Drug Index
RxMed
Substance Abuse and Mental Health Services Administration
Virtual Hospital