Fig. 6From: In vitro drug release characteristic and cytotoxic activity of silibinin-loaded single walled carbon nanotubes functionalized with biocompatible polymersCell viability of 3T3 cell line treated with SWSB-T20, SWSB-T80, SWSB-PEG, and SWSB-CS for 72 h. Cell viability is calculated as a percentage of absorbance of treated cells over absorbance of untreated cells. Data are shown as mean ± standard deviation from three separate experiments (n = 3). Asterisks indicate statistically significant differences of the cell viability between the concentrations (p < 0.05)Back to article page