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Cellular uptake of TEX‐Liposome in NIH3T3 cells. (a) In vitro cellular uptake of Liposome and TEX‐Liposome‐PTX (1/5, 1/20, 1/100) observed by CLSM at 0.5, 2, and 4 h (scale bar = 25 μm). (b) Quantified analysis of DiO intensity according to (a) by ImageJ. **p < 0.01. DiO, 3,3′‐dioctadecyloxacarbocyanine perchlorate; TEX, tumor‐derived exosome
