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(A) Cellular uptake images of MDA-MB-231 cells after treatment with free C6, C6 Lps, and KLA-C6 Lps for 4 h. (B) Cellular uptake of C6, C6 Lps, and KLA-C6 Lps detected by flow cytometry for 4 h. (C) Semiquantitative analysis of the intracellular uptake of C6, C6 Lps, and KLA-C6 Lps by flow cytometry. * p < 0.05, ** p < 0.01. C6, coumarin-6; C6 Lps, unmodified C6-loaded liposomes; KLA-C6 Lps, KLA-modified C6-loaded liposomes.
