AmelogeninDental Enamel HypoplasiaDental Enamel ProteinsMatrix Metalloproteinase 20Point MutationAmelogenesisMutationMutation, MissenseDental EnamelAmeloblastsNanospheresFrameshift MutationAmelogenesis ImperfectaMolecular Sequence DataTooth GermTooth CalcificationBase SequencePhenotypeGerm-Line MutationToothAmino Acid SequenceExonsApatitesPedigreeAllelesHomozygoteEnamel OrganHeterozygoteMice, KnockoutPolymerase Chain ReactionCalcium PhosphatesGenes, LethalGene DeletionIguanasMutagenesisMolarDNA Mutational AnalysisGenotypeDNA Primers