Figure 8.

(A,B) Comet images of CACO-2 cells after exposure to H${}_2$O${}_2$ (15 $\mathsf{\mu }$g mL${}^{-1}$) and (C,D) Images of CACO-2 cells after exposure to SiQDs (200 $\mathsf{\mu }$g mL${}^{-1}$) for 24 h using Comet IV (Perceptive, Bury St Edmunds, UK).