Fig. 6. Effects of different concentrations of MEA-CdTe QDs, l-Cys-CdTe QDs and TGA-CdTe QDs on mitochondrial membrane fluidity assessed by the anisotropy of HP. a, b, c, d, e represented mitochondria treated with 0 nM, 100 nM, 200 nM, 300 nM and 400 nM CdTe QDs respectively.