A) HCLE monolayer cultures plated in triplicate were either left unstressed or stressed with 10 mM tBHP. At the same time, a set of unstressed and stressed cultures were treated with Dynasore (40 uM). (An equal volume of the Dynasore diluent, DMSO, was added to untreated cultures.) After 2 hours, WST-1 and MTT assays were performed: *, p<0.05; **, P<0.01 (student t-test, n = 3).B) HCLE monolayer cultures plated in triplicate were either left unstressed or stressed with 10 mM tBHP. At the same time, a set of unstressed and stressed cultures were treated with Dynasore (40 uM). (An equal volume of the Dynasore diluent, DMSO, was added to untreated cultures.) After 3 hours, cells were stained with trypan blue dye and imaged under white light. Representative images are shown from each triplicate set: *, p<0.01 (student t-test, n = 3).