... (Figs 3–5) Antioxidant defences of q0 cell lines GSH-GSSG and GR We measured GSH and GSSG in exponentially growing cells, as GSH content changes in the growth and lag phases [51] In all q0 cells studied, ... cells, and that there are cell line-to -cell line variations in intracellular antioxidant defences and ROS homeostasis In fact among the studied cells, those originating from bone are particularly ... Determination of intracellular reactive oxygen species as function of cell density Methods Enzymol 352, 91–100 44 Zuo, L & Clanton, T.L (2002) Detection of reactive oxygen and nitrogen species in...