Watch a 3 minute video on Quertle, a biomedical database that focuses on finding conceptual relationships not just query terms, in a document.  Quertle draws its data from sources including PubMed, Toxline, coporate white papers and grant applications. It contains a database of over 270,000,000 meaningful relationships.  Learn about Power Terms, entire groups of related objects such a Genes, Proteins, Diseases which aid in bringing you  more relevant results.