Hydrogen SulfideCystathionine gamma-LyaseSulfidesAlzheimer DiseaseCystathionine beta-SynthaseOrganothiophosphorus CompoundsAlkynesFetusFetal Tissue TransplantationKATP ChannelsComplicityAborted FetusResearchTissue DonorsDirected Tissue DonationMaternal-Fetal ExchangePregnancyPlacentaLifeBlood DonorsAmyloid beta-PeptidesPersonhoodLiving DonorsBeginning of Human LifeAbortion, VeterinaryBrainResearch Support as TopicFetal ResearchAmyloid beta-Protein PrecursorGestational AgeResearch Designtau ProteinsNeurofibrillary TanglesEthics, ResearchPlaque, AmyloidResearch PersonnelCivil RightsPregnancy, AnimalNontherapeutic Human ExperimentationTherapeutic Human ExperimentationNursing ResearchPregnant WomenAbortion, InducedAmniotic FluidBrain Tissue TransplantationApolipoprotein E4Extraembryonic MembranesDementiaHealth Services ResearchLiverTranslational Medical ResearchTissue DistributionNeurofibrilsFetal DiseasesMolecular Sequence DataEthics, MedicalTissue and Organ ProcurementFetal ResorptionHydrops FetalisCognition DisordersSocial Control, FormalAmyloid Precursor Protein SecretasesPresenilin-1Genetic ResearchAmyloidEmbryonic and Fetal DevelopmentInformed ConsentMoral ObligationsNeuropsychological TestsAdvisory CommitteesFetal WeightFetal DeathAtrophyAbortion, LegalRNA, MessengerDementia, VascularTime FactorsBase SequenceChorionic VilliFederal GovernmentDisease Models, AnimalFetal DevelopmentPlacenta DiseasesImmunohistochemistry