Mice, KnockoutPhenotypeMammalsResearchResearch Support as TopicGene Knockout TechniquesResearch DesignEthics, ResearchResearch PersonnelNursing ResearchHealth Services ResearchTranslational Medical ResearchMice, Inbred C57BLGenetic ResearchClinical Nursing ResearchDental ResearchCommunity-Based Participatory ResearchMolecular Sequence DataBehavioral ResearchQualitative ResearchUnited StatesDisease Models, AnimalHuman ExperimentationPhylogeny