Figure 4: Level of HSPA8 mRNA after RNA7 transfection into MCF-7 cells. The indicated concentrations of RNA7 were transfected into cells using Lipofectamine, and the cells were cultured for 21 h. Control cells (0 nM RNA7) were incubated with Lipofectamine only. The error bars represent standard deviations. The asterisks (*) indicate significant difference from control .