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What is PubMed Central?
PubMed Central (PMC) is the U.S. National Library of Medicine's free digital archive of biomedical and life sciences journal literature.
PMC serves as a…a permanent archive a platform for enriched linking, analysis, and use of research reports and dataone of many sources of full-text articles linked to PubMed/MEDLINE citations
Access to PMC Content
Free access to full-text articles and supporting dataA journal may delay free access to its contentResearch  ...