Fig. 4From: Small size fullerenol nanoparticles suppress lung metastasis of breast cancer cell by disrupting actin dynamicsThe evaluation of cell’s stiffness. Young’s modulus values obtained by AFM to assess the stiffness of MDA-MB-231 cells (a) and MCF-7 cells (b). The cells were treated with fullerenol for 24 h. Error bars represent mean ± SD; *P < 0.05 and **P < 0.01 (n ≥ 100)Back to article page