Cells were exposed to IL-1β (A–D) and TNFα (E–H) after scrambled and HNK-1ST siRNA transfection. A, C, E, and G present Hoechst staining; B, D, F, and H are TUNEL assays. A, B, E, and F are HNK-1ST siRNA transfection; C, D, G, and H represent scrambled siRNA transfection. Cell death was observed in scrambled transfection after cytokine exposure (D and H).