PubMed is a free database of life sciences and biomedical information, maintained by the US National Library of Medicine (NLM) at the National Institutes of Health. PubMed holds over 22 million records and provides a broad range of data mining tools.
PubMed is a part of the Entrez information retrieval system, and as such is integrated with other databases, such as GenBank, which provides tools for automatic queries.
