- MedlinePlus From National Library of Medicine
- Includes health news, topical features, drug information, medical encyclopedia, dictionary, databases, directories, and other resources. - Infotrieve Free Medline Search
- Provides search results from National Library of Medicine databases. - Medportal.com
- Search the National Library of Medicine's Medline and Pre-Medline databases for the latest medical journal information. Includes an index of other web sources. - PubMed
- Integrates information from NCBI databases including nucleotide and protein sequences, macromolecular structures, whole genomes, and MEDLINE. Allows personalised search.
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