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PubMed & PubMed Central (including MESH): PubMed Central
This guide shares information on using the wonderful medical & biomedical database PubMed, PubMed Central and MESH.
PubMed Central® (PMC) is a free full-text archive of biomedical and life sciences journal literature at the U.S. National Institutes of Health's National Library of Medicine (NIH/NLM).