Figure 7

Effects of different doses of MWCNT-LVX, MWCNT-NH2, and MWCNT-COOH on cell viability. Data are shown as mean ± standard deviation from six separate experiments (n = 6). * and $ indicate statistically significant differences in cell viability. All deviations were taken as statistically significant if p < 0.05 and designated as **p < 0.01 vs. CNT-NH2 group; $$ p < 0.01 and $$$ p < 0.001 vs. control group. Abbreviations: MWCNT: Multi-walled carbon nanotube; LVX: Levofloxacin; MWCNT-COOH: Carboxylic acid-functionalized MWCNTs; MWCNT-NH2: Amine-functionalized MWCNTs; MWCNT-LVX: Levofloxacin-loaded functionalized MWCNTs.