Combined inhibition of de novo glutathione and nucleotide biosynthesis is synthetically lethal in glioblastoma ScienceDirect Subnormal Serum Liver Enzyme Levels: A Review of Pathophysiology and Clinical Significance Metabolic profiling of antigen specific CD8+ T cells by spectral flow cytometry: Cell Reports Methods A locally activatable sensor for robust quantification of organellar glutathione Nature Chemistry