PubMed Central Collection Info
PubMed Central
Like MEDLINE, PubMed Central is a collection within PubMed. Access to PubMed Central is free and open to the public, and contains full text access to biomedical and life sciences journal literature from the U.S. National Institutes of Health (NIH). PubMed Central houses over 500,000 full text articles, most of which have a corresponding citation in PubMed.