Figure 2From: An in vitro study of neuroprotective properties of traditional Chinese herbal medicines thought to promote healthy ageing and longevity Neuroprotective effects of the herbal extracts. The relative cytotoxicity of neuronal cells was measured for the cell cultures (n = 3) co-treated with 100 μg/ml of the herbal extracts and 500 nM staurosporine for 24 h. * p value < 0.05; ** p value < 0.01, and *** p value < 0.001 compared with the positive control.Back to article page