PubMed

What PubMed is

PubMed is a free resource for searching and retrieving biomedical and life sciences literature. Its collection contains more than 40 million citations and abstracts from MEDLINE, PubMed Central, and Bookshelf, covering journal literature, books, and book chapters. PubMed does not contain full-text journal articles, although records often link to full text elsewhere, where access may require a fee or subscription. Search tools include Advanced Search, Clinical Queries, Single Citation Matcher, and Batch Citation Matcher. Search assistance includes Best Match ranking, autocomplete, spell checking, and a citation sensor; filters can narrow results by publication date, text availability, article type, language, species, sex, age, and other criteria. Citation pages offer a Similar Articles section with a pre-calculated set of related records. Users can export citations to citation management software, receive email updates for new search results, and access data through the E-utilities API or FTP downloads. PubMed is maintained by the National Center for Biotechnology Information at the U.S. National Library of Medicine, part of the National Institutes of Health.