Effects of SCRT on the expression of DR-related proteins and Bid in A549 cells. Cells were treated with the indicated concentrations of SCRT for 72 h. The cells were lysed, and the cellular proteins were visualized using the indicated antibodies and an ECL detection system. Actin was used as an internal control. The experiment was repeated three times and similar results were obtained. The relative ratios of expression in the results of the Western blotting were presented at the bottom of each of the results as relative values of the actin expression.