Amino Acid Transport System AAmino Acid Transport Systems, NeutralAmino Acids, NeutralAmino Acid Transport Systemsbeta-AlanineInformaticsGlutamineAntigens, CD98 Light ChainsAmino Acid Transport System ASCAcidosisBiotinylationPotassium DeficiencyPregnancy Trimester, ThirdAmino Acid Transport System y+PlacentaLarge Neutral Amino Acid-Transporter 1GABA Plasma Membrane Transport ProteinsHypertonic SolutionsActivating Transcription Factor 4Amino AcidsXenopus laevisTrophoblastsPotassium, DietaryPregnancy Trimester, FirstActivating Transcription FactorsCations, MonovalentBiological TransportGlutaminaseOocytesEukaryotic Initiation Factor-2AsparagineRNA, MessengerGene Expression RegulationAmmonium ChlorideAmino Acid Transport System X-AGTOR Serine-Threonine KinasesNeocortexUp-RegulationCells, CulturedSignal TransductionOsmotic PressurePregnancySodiumAlanineHydrogen-Ion ConcentrationHistidineReverse Transcriptase Polymerase Chain ReactionProtein IsoformsCell MembraneHepatocytesProlineResponse ElementsBlotting, WesternTissue DistributionMutagenesis, Site-DirectedKineticsBlotting, NorthernProtein BiosynthesisProtein TransportElectrophysiologyMicroscopy, FluorescenceGene ExpressionMembrane PotentialsNeuronsMolecular Sequence DataDNA, ComplementarySpecies SpecificityConserved SequenceOrgan SpecificityGenomicsImmunohistochemistryCell LineCarrier ProteinsAmino Acid SequenceDown-RegulationCell Line, Tumor