MTT assay of KB cell viability after treatment with free 2-ME (10 μM) dissolved in 1 μL ethanol, ethanol only (1 μL), 2-ME complexed with G5.NglyOH (1), G5.NHAc (2), G5.SAH (3), and G5.NH2 (4) dendrimers, and G5.NglyOH (5), G5.NHAc (6), G5.SAH (7), and G5.NH2 (8) dendrimers without the complexation of 2-ME for 48 h. The data are expressed as mean ± S. D.