Abortion, InducedAbortion, SepticPregnancyAbortion, VeterinaryAbortion, SpontaneousFetusAborted FetusFetal Tissue TransplantationAbortion, CriminalComplicityAbortion, TherapeuticAbortion ApplicantsResearchAbortion, MissedAbortion, HabitualDirected Tissue DonationLifePersonhoodPlacentaMaternal-Fetal ExchangeAbortion, ThreatenedBeginning of Human LifeAbortifacient AgentsGestational AgeAbortion, IncompletePregnant WomenFetal ResearchResearch Support as TopicAbortifacient Agents, SteroidalFetal DeathResearch DesignCivil RightsAbortion, EugenicPregnancy Trimester, FirstEthics, ResearchPregnancy, AnimalResearch PersonnelMisoprostolNontherapeutic Human ExperimentationTherapeutic Human ExperimentationAbortifacient Agents, NonsteroidalAmniotic FluidFetal ResorptionNursing ResearchPregnancy, UnplannedFetal DiseasesEthics, MedicalMoral ObligationsPlacenta DiseasesPregnancy, UnwantedBrain Tissue TransplantationSocial Control, FormalExtraembryonic MembranesHydrops FetalisHealth Services ResearchVacuum CurettageTranslational Medical ResearchPregnancy Complications, InfectiousPregnancy Trimester, SecondMoralsLiverTissue DistributionChorionic VilliAdvisory CommitteesGenetic ResearchEmbryonic and Fetal DevelopmentMinorsUnited StatesFetal WeightContraceptionUterusGovernment RegulationInformed ConsentAbortion, LegalLegislation, MedicalSterilization, ReproductiveFederal GovernmentTrophoblastsFetal Development