On mouse browsers, tracks that show alignments of sequence tags from the International Gene Trap Consortium (IGTC) (22) are updated monthly. Mouse Genome Informatics (MGI) (23) tracks, which show quantitative trait loci, phenotypes and alleles; and the IKMC Genes track, which shows genes targeted by the International Knockout Mouse Consortium (24) for generating mouse embryonic stem cells containing a null mutation in every gene in the mouse genome, are all updated regularly.
