(±)-α-Tocopherol effects on BDE-47-stimulated COX activity in HTR-8/SVneo cells. COX activity was inferred by quantification of PGE2 concentrations in the culture medium of cells stimulated with exogenous arachidonic acid after BDE-47 treatment. Cells received no BDE-47 treatment (non-treated control, NT), or were treated with solvent control (DMSO, 0.7% v/v) or 20 μM BDE-47 for 24 h in the absence or presence of 20 μM (±)-α-tocopherol. *P<0.05, significantly different compared to solvent control with no (±)-α-tocopherol cotreatment. #P<0.05, statistically significantly different from each other.