COUP Transcription Factor ICOUP Transcription Factor IICOUP Transcription FactorsReceptors, SteroidChickensHepatocyte Nuclear Factor 4Transcription FactorsPromoter Regions, GeneticDNA-Binding ProteinsBasic Helix-Loop-Helix Leucine Zipper Transcription FactorsRetinoid X ReceptorsTranscription, GeneticBase SequenceReceptors, Retinoic AcidReceptors, Cytoplasmic and NuclearOvalbuminMolecular Sequence DataGene Expression RegulationTransfectionNuclear ProteinsBinding SitesCell LineProtein BindingTranscriptional ActivationOviductsRepressor ProteinsGenes, ReporterSp1 Transcription FactorRegulatory Sequences, Nucleic AcidRNA, MessengerDNA