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Confocal images of MDA-MB-231 cells showing the internalization of ReCMC composite (a) fluorescence image, (b) bright-field image and (c) overlaid DIC image, and HT-29 cells (d) fluorescence image, (e) bright-field image and (f) overlaid DIC image after incubation with ReCMC for 1 h (λex = 405 nm and λem = 550 nm).
