Figure 8
From: Noncovalent functionalization of carbon nanotubes as a scaffold for tissue engineering

(A) Concentration-dependent effect of CNTs species on the viability of 3T3 cells over 24 h. (B) Testing the effect of 0.1% Py-OH and Py-COOH on the cell viability. The symbol * indicates significance (P ≤ 0.05) compared to the control (0.000%), n = 8. The statistical significance was determined by the one-way ANOVA test.