CitrullineOrnithineArginineCitrullusOrnithine CarbamoyltransferaseHydrolasesNitrogen IsotopesGlutamineCarbamyl PhosphateNitric Oxide SynthaseCitrullinemiaArgininosuccinate LyaseArginaseProlineAmmoniaArgininosuccinic AcidNitric OxideAmino Acid OxidoreductasesUreaCarbamoyl-Phosphate Synthase (Ammonia)Catecholamine Plasma Membrane Transport ProteinsMouth AbnormalitiesAmino AcidsShort Bowel SyndromeGlutamatesMitochondria, LiverEnterocytesAmino Acids, DiaminoRenal AminoaciduriasOrnithine-Oxo-Acid TransaminaseAmino Acid Transport Systems, BasicOrnithine Carbamoyltransferase Deficiency DiseaseCarbon IsotopesBiopterinNitritesPhenylbutyratesOrotic Acid