Simultaneously search multiple life sciences databases at the National Center for Biotechnology Information (NCBI).
The National Library of Medicine Gateway allows users to search in multiple retrieval systems at the U.S. National Library of Medicine.
KMLE Medical Dictionary
Search several resources simultaneously for medical terminology, medical abbreviations, journals, and drug names.
Med Help International Search
Consumer medical search engine comprising articles, patient support groups, glossary, questions and answers.
A tool from Health on the Net that searches the full text of 60,000 medical documents. Searches can be narrowed by location or type of source.
Directory and medical search engine for healthcare professionals.
Medical World Search
This tool has the ability to query other search engines, also provides a discussion forum, medical spelling and drug acronym devices. All users must register and pay annual membership fee.