Placental HormonesTrophoblastsPlacental LactogenPlacentaPregnancyChorionic GonadotropinChorionic VilliGene ExpressionGene Expression ProfilingGene Expression RegulationPregnancy ProteinsPregnancy Trimester, FirstPre-EclampsiaChoriocarcinomaPregnancy Trimester, ThirdRNA, MessengerPlacentationHormonesMaternal-Fetal ExchangeAlpha-AmanitinGiant CellsCell FusionImmunohistochemistryReverse Transcriptase Polymerase Chain ReactionGene Expression Regulation, DevelopmentalThyroid HormonesOligonucleotide Array Sequence AnalysisDeciduaExtraembryonic MembranesFollicle Stimulating HormoneCells, CulturedLuteinizing HormonePlacental CirculationGene Products, envTranscription FactorsMicrovilliBase SequenceMolecular Sequence DataAmino Acid Transport System APlacenta DiseasesCell DifferentiationCell LineGestational AgeChorionParathyroid HormoneTranscription, GeneticHydatidiform MoleFetal Growth RetardationGonadotropin-Releasing HormonePromoter Regions, GeneticGonadal Steroid HormonesFluorescent Antibody TechniquePregnancy Complications, ParasiticBlotting, WesternEndogenous RetrovirusesGene Expression Regulation, NeoplasticAmino Acid Transport Systems, BasicIn Situ HybridizationBlotting, NorthernChorionic Gonadotropin, beta Subunit, HumanFetus