Fig. 4.
Effect of ginsenoside Rb2 on glutamate-induced cell death. (A) Control. (B) The ratio of apoptotic or death cells was increased to 22.75% by the treatment of glutamate (5 mM). (C) and (D) The ratio of apoptotic or death cells was reduced to 13.71% by co-treatment of Rb2 (2.85 μM and 25.7 μM) and glutamate (5 mM).