Fig. 4From: Poly(γ-glutamic acid)-coated lipoplexes loaded with Doxorubicin for enhancing the antitumor activity against liver tumorsThe apoptosis rate of HepG2 cells via Flow cytometry assay after 48 h treatment with: free Dox, L-Dox, and PGA-L-Dox (containing Dox concentrations of 10 μg/ml). The histogram shows the apoptosis rate (%) of HepG2 cells (n = 3). **p < 0.01 vs. free Dox, #p < 0.05 vs. L-DoxBack to article page