Fig. 6From: Physicochemical properties of polysaccharides from Dendrobium officinale by fractional precipitation and their preliminary antioxidant and anti-HepG2 cells activities in vitroGrowth inhibition analysis of HepG2 cells treated with DOP-40, DOP-50, DOP-60, and DOP-70 for 24 h (a) and 48 h (b) by MTT assay. The protein levels of Bcl-2 (c, e) and Bax (c, f) in HepG2 cells treated with DOP-40, DOP-50, DOP-60, and DOP-70 (400 μg/ml) for 48 h were analyzed by western blotting. The bar graphs (mean ± SD) and representative images are shown. *p < 0.05; **p < 0.01 compared with the control groupBack to article page