Fig. 5From: Effects of the surface charge of polyamidoamine dendrimers on cellular exocytosis and the exocytosis mechanism in multidrug-resistant breast cancer cellsThe released amount of LDH after PAMAM-NH2 (a), PAMAM-OH (b) and PAMAM-COOH (c) dendrimer treatment. The control samples were cells without PAMAM dendrimer treatment. All values are relative to the control. ** indicates P < 0.01 vs. the control group; mean ± SD, n = 6Back to article page