Figure 5From: Role of oxidative stress and intracellular glutathione in the sensitivity to apoptosis induced by proteasome inhibitor in thyroid cancer cells Effects of intracellular GSH on the bortezomib-induced cell death. Cells were pretreated with BSO alone or BSO and GSH monoethyl ester, 24 hours later after sequential treatment with vehicle or bortezomib, intracellular GSH level (A) and apoptotic cells (B) were analyzed. *, P< 0.05; ** P < 0.001.Back to article page