Zhang, Liqing Mammalian housekeeping genes evolve more slowly than tissue-specific genes. [electronic resource] - Molecular biology and evolution Feb 2004 - 236-9 p. digital Publication Type: Journal Article; Research Support, U.S. Gov't, P.H.S. ISSN: 0737-4038 Standard No.: 10.1093/molbev/msh010 doi Subjects--Topical Terms: AnimalsDatabases, Nucleic AcidEvolution, MolecularGene Expression RegulationGenomeHumansMammalsMiceMutationOrgan Specificity--genetics