Upstream Stimulatory FactorsPromoter Regions, GeneticE-Box ElementsTranscription FactorsDNA-Binding ProteinsHelix-Loop-Helix MotifsBase SequenceElectrophoretic Mobility Shift AssayGene Expression RegulationTranscription, GeneticReceptors, FSHMolecular Sequence DataBinding SitesProtein BindingTranscriptional Activation