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Mouse-over the Genes tab above to see the sub-pages focused on Gene Expression, Genetic Variation, and Clinical Genetics.
NCBI's database of curated gene records for multiple species.
MGC - Mammalian Gene Collection
Database of complete open reading frames (ORFs) for every human, mouse, and other model organisms' genes.
Extensive, integrated data on all human genes
The TIGR Gene Indices
Annotated genetic information of genes and expressed sequence tags (ESTs) in over 70 eukaryotic organisms.
Ontology for characterization of genes regardless of species.