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Cellular internalization of ZnF01 (a–c) and ZnF02 (d–f) in A549 and BJ cells after a 24 h exposure; (a,d) the relative internalization; (b,e) the total amount of ZnF01/ZnF02 internalized in A549 and BJ cells; (c,f) the internalized quantity of ZnF01/ZnF02 per cell. The values are expressed as mean ± SD of at least three biological replicates. Double asterisks (**) indicate significant differences (ANOVA + Dunn’s; p < 0.001).
