Beginning of Human LifeFetusPersonhoodJudaismHuman CharacteristicsLifeValue of LifeGestational AgePregnancyHuman DevelopmentBioethical IssuesEthical TheoryPhilosophy, MedicalReligion and MedicineFetal HeartLongevityFetal DiseasesUltrasonography, PrenatalQuality of LifeMoralsEthics, MedicalHeart Rate, FetalPregnancy Reduction, MultifetalFetal DevelopmentFetal MovementEmbryo ResearchPregnancy Trimester, SecondCloning, OrganismNonodontogenic CystsEmbryonic and Fetal DevelopmentPregnancy Trimester, ThirdBiological EvolutionCampylobacter fetusFetoscopyAnencephalyMaternal-Fetal ExchangeAborted FetusUmbilical ArteriesAgingFetal MonitoringBlood Flow VelocityFetal TherapiesFetal BloodPlacental CirculationTritrichomonas foetusStapediusFetal Growth RetardationDuctus ArteriosusForamen OvaleInfant, NewbornFetal WeightUltrasonography, Doppler, PulsedPrenatal DiagnosisPlacentaPregnancy Trimester, FirstUltrasonography, Doppler, ColorUmbilical VeinsSheepUltrasonography, DopplerAbortion, SpontaneousReference ValuesPulsatile FlowEmbryo, MammalianLiverVena Cava, InferiorImmunohistochemistrySpineImaging, Three-DimensionalEchocardiography, DopplerOsteogenesisPulmonary ArteryAnthropometryProspective StudiesGene Expression Regulation, DevelopmentalLungBrainThymus GlandTissue DistributionFetal DeathAbortion, VeterinaryAortaRegression AnalysisRNA, MessengerCell DifferentiationLife Change EventsTime Factors