Figure 5

Water soluble toluene nano C₆₀ also does not block cell proliferation. Absorption spectra (A) and particle sizes (B) of water soluble nano C₆₀ from toluene are consistent with those reported in literature. The peak absorption wavelengths are indicated by arrows in A and the average particle size of the water soluble C₆₀ is 122 nm. MDA MB 231 (C) and HepG2 (D) cells were cultured with 2.7 μg (dotted line) or 27.4 μg (dashed line) of water soluble toluene nano C₆₀ or were untreated (solid line) and cell proliferation was assayed by crystal violet staining method.