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RU486 blocks inhibition of TRAIL-induced cell death by dexamethasone in A549 cells. A549 cells were treated with control medium, TRAIL, pretreated with dexamethasone 12 hr before the addition of TRAIL and pretreated with RU486 30 min before the addition of dexamethasone and TRAIL. Cell viability was assessed by crystal violet assay 24 hr later.
