21Bdb was developed by the genome center and its Genome Computing Group. New LBL data and revisions will be added weekly. Users are encouraged to add questions and comments. 21Bdb is one of several databases that LBL is helping to develop for different genomes, including those of Drosophila melanogaster , soybean, wheat, and forest trees. The map is displayed graphically with zoom capability, and users can ''click'' individual biological elements to bring up details on any object, such as STS primer sequence and product size and cDNA sequence.
Authorized users can rearrange map markers by''drag and drop'' or by respecifying position.
Remote users run 21Bdb at LBL with the graphic interface display on their own local computers.