BlastodermCytoplasmEmbryo, NonmammalianDrosophilaGastrulaBlastodiscDrosophila ProteinsDrosophila melanogasterBody PatterningChick EmbryoTriboliumGenes, InsectGene Expression Regulation, DevelopmentalCell NucleusCoturnixInsect ProteinsMorphogenesisHeteropteraQuailFushi Tarazu Transcription FactorsOrganizers, EmbryonicZebrafishBlastulaMolecular Sequence DataVitelline MembraneCleavage Stage, OvumNodal Signaling LigandsInsect HormonesTranscription FactorsGerm CellsHomeodomain ProteinsOvumAmino Acid SequenceGerm LayersIn Situ HybridizationAminopterinBase SequenceEmbryonic InductionZygoteMutationMicroscopy, ElectronZebrafish Proteins