Figure 8.

Raman spectra of cells. (a) Mean Raman spectra of A549 cells before and after exposure to 200 μg/mL of GQDs. (b) Average Raman spectra of C6 cells before and after treated with GQDs at the concentration of 200 μg/mL. Excitation wavelength, 785 nm.

Yuan et al. Nanoscale Research Letters 2014 9:108   doi:10.1186/1556-276X-9-108
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