FetusPregnancyCampylobacter fetusTritrichomonas foetusGestational AgeGene Expression Regulation, DevelopmentalFetal DiseasesEmbryonic and Fetal DevelopmentUltrasonography, PrenatalMaternal-Fetal ExchangeEmbryonic DevelopmentPhenotypeCell DifferentiationMorphogenesisEmbryo, MammalianPlacentaFetal HeartFetal DevelopmentAnimals, NewbornTranscription FactorsIn Situ HybridizationEmbryo, NonmammalianFetal DeathMice, KnockoutMutationPrenatal DiagnosisSignal TransductionHomeodomain ProteinsFetal Growth RetardationInfant, NewbornMolecular Sequence DataPregnancy Trimester, SecondMice, TransgenicMice, Mutant StrainsMice, Inbred C57BLAbortion, VeterinaryMesodermBlastocystHeart Rate, FetalRNA, MessengerSheepDrosophila ProteinsAbnormalities, MultipleGene TargetingZebrafishChick EmbryoBase SequenceBody PatterningEyeDNA-Binding ProteinsAmniotic FluidImmunohistochemistryNerve Tissue ProteinsHydrops FetalisUmbilical ArteriesTeratogensZebrafish ProteinsCongenital AbnormalitiesFetal WeightLarvaHomozygoteNervous SystemEctodermCrosses, GeneticHeart Defects, CongenitalDrosophila melanogasterFetal HypoxiaDrosophilaTritrichomonasGenes, LethalCell LineageChimeraApoptosisPregnancy Trimester, ThirdBrainNeuronsZygoteModels, BiologicalPregnancy Trimester, FirstCells, CulturedTime FactorsNeural CrestStem CellsAmino Acid SequenceAnimals, Genetically ModifiedGastrulaTrans-ActivatorsGene Expression RegulationHedgehog ProteinsEndodermFetal BloodEmbryonic InductionDiencephalonCrown-Rump LengthUterusGenomic ImprintingCraniofacial AbnormalitiesAmniocentesisCell CountCentral Nervous System