Buthionine SulfoximineMethionine SulfoximineGlutathioneGlutamate-Cysteine LigaseMaleatesAntimetabolitesAcetylcysteineGlutathione SynthaseGlutathione DisulfideCystineOxidative StressPyrrolidonecarboxylic AcidGlutathione ReductaseCell SurvivalOxidation-ReductionDrug ResistanceDiamideMelphalanSulfhydryl CompoundsAntioxidantsReactive Oxygen Speciesgamma-GlutamyltransferaseHydrogen PeroxideGlutathione PeroxidaseDrug SynergismOxidantsEnzyme InhibitorsArsenicalsGlutathione TransferaseGlutamate-Ammonia LigaseAntimetabolites, AntineoplasticTumor Cells, CulturedCysteineCatalaseDose-Response Relationship, DrugCells, CulturedLiverApoptosis