Buthionine SulfoximineMethionine SulfoximineGlutathioneGlutamate-Cysteine LigaseMaleatesAntimetabolitesGlutathione SynthaseAcetylcysteineGlutathione DisulfideCystineGlutamate-Ammonia LigaseOxidative StressPyrrolidonecarboxylic AcidGlutathione ReductaseCell SurvivalOxidation-ReductionDrug ResistanceDiamideMelphalanSulfhydryl CompoundsAntioxidantsReactive Oxygen Speciesgamma-GlutamyltransferaseHydrogen PeroxideGlutathione PeroxidaseEnzyme InhibitorsDrug SynergismOxidantsArsenicalsGlutathione TransferaseCysteineTumor Cells, CulturedAntimetabolites, AntineoplasticAmino Acyl-tRNA Synthetases2',5'-Oligoadenylate SynthetasePeptide SynthasesLiverKineticsCatalaseDose-Response Relationship, DrugGlutamineCells, CulturedApoptosis