Figure 3.
Survival rate of E. coli exposed to different concentrations of CQDs measured by MTT method. (a) 24 h, (b) 48 h, and (c) 72 h (n.s. p > 0.05, * p < 0.05, ** p < 0.01, *** p < 0.001, and **** p < 0.0001).
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