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PubMed comprises more than 22 million citations for biomedical literature from MEDLINE, life science journals, and online books. Citations may include links to full-text content from PubMed Central and publisher web sites.
PubMed CentralĀ® (PMC) is a free archive of full text biomedical and life sciences journal literature at the U.S. National Institutes of Health's National Library of Medicine (NIH/NLM).
Scholarly articles in over 150 academic journals. Articles date from the 1800s up to a "moving wall" of between one and eight years before the present. Coverage includes the arts, business, general science, the humanities, and social science.