Genetic variation from DNA sequence information around the world is cataloged in a large computer database known as GenBank. GenBank is maintained by the National Center for Biotechnology Information (NCBI), which is part of the National Library of Medicine with the U.S. National Institutes of Health. The NCBI was established in 1988 as a national resource for molecular biology information to improve understanding of molecular processes affecting human health and disease. As of December 2003, GenBank contained over 36 billion nucleotide bases from more than 30 million different records.
This repository of DNA sequence information is not from humans alone. Over 120 000 different species are represented in GenBank. GenBank DNA sequences may be viewed and retrieved over the Internet via the NCBI home page at http://www.ncbi.nlm.nih.gov.
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