Dermatology
Atlas of Dermatology | Dermatology Image Bank | Dermatology Online Atlas | Electronic Textbook of Dermatology | eMedicine | Flight Surgeon's Manual | General Medical Officer Manual | Introduction to Basic Dermatology | Iowa Family Practice Handbook | Merck Manual

Embryology
Cardiac Embryology | Development of the Human Heart | Embryology of the Central Nervous System | Fetal and Young Child Central Nervous System - the Story of the Development and Maldevelopment of the Brain | Genitourinary Development | Multi-Dimensional Human Embryo University of New South Wales Embryology | Visible Embryo

Emergency Medicine
eMedicine | First Aid Anatomy | First Aid for Soldiers | General Medical Officer Manual | Iowa Family Practice Handbook | Merck Manual - Disorders Due to Physical Agents | Merck Manual - Poisoning | U.S. Navy Standard First Aid Course

Evidence Based Medicine (EBM)
Cochrane Collaboration | DARE | EBM Resources | EBM Resources from U.S. Navy

Family Medicine
AHCPR Clinical Practice Guidelines | eMedicine | Flight Surgeon's Manual | General Medical Officer Manual | Iowa Family Practice Handbook | LSU Department of Family Medicine Outpatient Management Manual | Merck Manual | National Guideline Clearinghouse | Primary Care Clinical Practice Guidelines Index | Sickcall Screener's Handbook | Virtual Naval Hospital

Histology
Atlas of Microscopic Anatomy | Histology Laboratory Assistant | JayDoc HistoWeb | LUMEN Histology | U of Wisconsin Histology Atlas

History of Medicine
Images from the History of Medicine

Informatics
Handbook of Medical Informatics | Introduction to Medical Informatics

Internal Medicine (including the adult subspecialties of Allergy-Immunology, Cardiology, Endocrinology, Gastroenterology, Hematology-Oncology, Infectious Disease, Nephrology, Pulmunology, Rheumatology)
AHCPR Clinical Practice Guidelines | AIDS Knowledge Base | Centers for Disease Control Guidelines for Treating Sexually Transmitted Diseases | ECGs by Example | eMedicine | Flight Surgeon's Manual | General Medical Officer Manual | Guide to Malaria Prevention and Control | Iowa Family Practice Handbook | LSU Department of Family Medicine Outpatient Management Manual | Lung Tumors | Merck Manual | National Cancer Institute PDQ Clinical Cancer Information | National Guideline Clearinghouse | Oncolink | Primary Care Clinical Practice Guidelines Index | Sickcall Screener's Handbook | Virtual Naval Hospital

Microbiology
Medical Microbiology

Neurology
eMedicine | Flight Surgeon's Manual | General Medical Officer Manual | Iowa Family Practice Handbook | Merck Manual |

Neurosurgery
General Medical Officer Manual | Neurosurgery Resident's Handbook

Nutrition
American Dietetic Association

Obstetrics and Gynecology
eMedicine | General Medical Officer Manual | Human Reproduction | Iowa Family Practice Handbook - Obstetrics | Iowa Family Practice Handbook - Gynecology | Merck Manual | Operational Obstetrics and Gynecology | Surgical Emergencies in Obstetrics and Gynecology

Ophthalmology
Digital Atlas of Ophthalmology | Digital Ophthalmic Slide Collection | eMedicine | Flight Surgeon's Manual | General Medical Officer Manual | Iowa Family Practice Handbook | Merck Manual

Orthopaedic Surgery
Electronic Orthopaedic Textbook | eMedicine - Orthopaedic Surgery | eMedicine - Sports Medicine | General Medical Officer Manual | Iowa Family Practice Handbook | Merck Manual | Wheeless' Textbook of Orthopaedics

Otolaryngology
eMedicine | Flight Surgeon's Manual | General Medical Officer Manual | Iowa Family Practice Handbook | Merck Manual

Pathology
Cornell Path Notes | Digital Slice of Life | Gram Staining | Laboratory Test Interpretation | Lab Tests Online | Merck Manual | Pathology Education Instructional Resource | Urbana Atlas of Pathology | WebPath

Pediatrics (including pediatric subspecialties)
Clinical Genetics | eMedicine | General Medical Officer Manual | GeneralPediatrics.com | Iowa Family Practice Handbook | Merck Manual - Genetics | Merck Manual - Pediatrics | Online Mendelian Inheritance in Man | Pediatric Emergency Manual | Pedsdermatlas

Pharmacology
DrugFactsAtoZ | HealthAnswers DrugFinder | Internet Self Assessment in Pharmacology | Iowa Family Practice Handbook | MEDLINEplus | Merck Manual | RxList

Physical Examination
LUMEN Screening Physical Exam | NeuroExam | Medical Information - A Physical Exam Study Guide

Physical Medicine and Rehabilitation
eMedicine | Merck Manual

Physiology
Textbook in Medical Physiology and Pathophysiology

Preventive Medicine
CDC Prevention Guidelines Database | Clinician's Handbook of Preventive Services | Field Hygiene and Sanitation - FM 21-10 | General Medical Officer Manual | Guide to Clinical Preventive Services | Manual of Naval Preventive Medicine |

Psychiatry
eMedicine | Emergency Psychiatry Service Handbook | Flight Surgeon's Manual | General Medical Officer Manual | Iowa Family Practice Handbook | Internet Mental Health | Merck Manual

Radiology and Radiation Oncology
Cardiothoracic Imaging | eMedicine | Emory Radiologic Anatomy | Introduction to Basic Radiology | McGill Radiologic Anatomy | Normal Radiologic Anatomy | Radiologic Anatomy Modules | USUHS Chest X-Ray Review | USUHS Radiologic Anatomy Browser

Surgery
eMedicine | eMedicine Plastic Surgery | Emergency War Surgery Handbook | Ethicon Wound Closure Manual | Ethicon Knot Tying Manual | General Medical Officer Manual | Iowa Family Practice Handbook | Vesalius Surgical Education

Travel Medicine
Centers for Disease Control Travel Medicine | Emporiatrics: Travel Medicine | GlobalHealth.gov | Merck Manual

Undersea Medicine
US Navy Diving Manual

Urology
General Medical Officer Manual | Iowa Family Practice Handbook | Merck Manual

Wilderness Medicine
Medical Aspects of Cold Weather Operations | Medical Problems in High Mountain Environments | Sustaining Health & Performance in The Cold: Environmental Medicine Guidance for Cold Weather Operations

Patient Simulations

AIDA Diabetes Simulator | Auckland Healthcare | Interactive Patient | Trauma Moulage | Trauma Patient Presentations | Virtual Autopsy | Virtual Hospital | WebPath

Patient Education / Consumer Health Information

How to Evaluate Medical Information on the Internet
Medical Library Association - Deciphering Medspeak | Science Panel on Interactive Communication and Health - How to Evaluate Medical Web sites

Anatomy Information
Human Anatomy Online

Patient Education / Consumer Health Information
Adam.com Medical Encyclopedia | AHCPR Patient Guidelines | American Academy of Family Physicians Patient Information | American Academy of Pediatrics | American Cancer Society Cancer Resource Center | CDC Disease Fact Sheets | ClinicalTrials.gov | Cochrane Collaboration Consumer Network | Columbia University College of Physicians and Surgeons Complete Home Medical Guide | HealthFinder | HealthyKids.com | KidsHealth.org | Mayo Clinic | MEDLINE Plus | Merck Manual of Medical Information - Home Edition | National Cancer Institute PDQ Clinical Cancer Information | National Institutes of Health Consumer Health Information | Oncolink | PDR's Getting Well Network | PDR Guide to Medical Care | Texas Pediatric Surgical Associates | US Government Consumer Health Information | U.S. Navy Health Book | Virtual Naval Hospital | Young Women's Resource Center | Your Surgery | Index of Consumer Health Organizations

MEDLINE and Medical Journals

MEDLINE
PubMed

Medical Journals
American Family Physician | BMJ | Student BMJ | FreeMedicalJournals.com | JAMA | Lancet | MMWR | MS JAMA | NEJM | Pediatrics | PubMedCentral | Western Journal of Medicine

Continuing Education and Board Exams / Review Questions

Continuing Education
Annotated List of Online CME Sites | e.MD Online CME Resources | MedicalComputingToday | Medical Matrix | MedWebPlus | NIH Consensus Development Program | Virtual Hospital | Virtual Lecture Hall

Board Exams / Review Questions
NeuroAnatomy U of Wisconsin | Pathology - WebPath

Medical Organizations

Professional Societies and Organizations
AAMC | AMA | AMA MedStudent | AMSA | AOA | IFMSA | MedSIN | NBME | NMA | SNMA | SOMA | USMLE | Index of Professional Societies

National and International Organizations
Centers for Disease Control | Food and Drug Administration | National Institutes of Health | National Library of Medicine | World Health Organization

Internet Directories and Search Engines

Health Sciences and Pediatric Directories
CliniWeb | GeneralPediatrics.com | Hardin Meta Directory of Internet Health Sources | Harriet Lane Links | HealthWeb | Medical Matrix | MedWeb | MedWebPlus | Open Directory: Health: Medicine | Child Health Issues | WWW Virtual Library: Biosciences | WWW Virtual Library: Medicine | Yahoo: Health: Medicine

Health Sciences Dictionaries
Online Medical Dictionary | Merriam Webster's Medical Dictionary | Taber's Cyclopedic Medical Dictionary

Health Sciences Search Engines
MedHunt | OMNI