With the exception of certain third-party files summarized below, this software is a “United States Government Work” under the terms of the United States Copyright Act. It was written as part of the authors’ official duties as United States Government employees and thus cannot be copyrighted. This software is freely available to the public for use. The National Library of Medicine and the U.S. Government have not placed any restriction on its use or reproduction.

Please cite the authors in any work or product based on this material [1, 2].

  1. NCBI Resource Coordinators. Database resources of the National Center for Biotechnology Information. Nucleic Acids Res. 2013 Jan;41(Database issue):D8-D20. doi: 10.1093/nar/gks1189. Epub 2012 Nov 27. PubMed PMID: 23193264; PubMed Central PMCID: PMC3531099.

  2. Camacho C, Coulouris G, Avagyan V, Ma N, Papadopoulos J, Bealer K, Madden TL. BLAST+: architecture and applications. BMC Bioinformatics. 2009 Dec 15;10:421. doi: 10.1186/1471-2105-10-421. PubMed PMID: 20003500; PubMed Central PMCID: PMC2803857.