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(a) Cellular internalization of control, iRGD-LP, Trast-LP, and iRGD-Trast-LP on SK-BR-3 cells. The images were captured at a magnification of 20. (b) Quantification of cellular uptake was performed by measuring MFI value using ImageJ software version 1.54g. All data are presented as mean ± SD with n = 3. * denotes p < 0.05, considered significant; ** and *** denote p < 0.01 and p < 0.001, respectively, considered highly significant data.
