Goosecoid ProteinXenopusXenopus laevisXenopus ProteinsGastrulaHomeodomain ProteinsActivinsEmbryo, NonmammalianOrganizers, EmbryonicEmbryonic InductionRepressor ProteinsGene Expression Regulation, DevelopmentalInhibinsMesodermGenes, HomeoboxT-Box Domain ProteinsZebrafish ProteinsTranscription FactorsIn Situ HybridizationBody PatterningMolecular Sequence DataNotochordMorphogenesisZebrafishMicroinjectionsAmino Acid SequenceTissue TransplantationEctodermHeadFacial BonesBase SequenceSkull