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PHK26-labelled hUCMSC-Exos were uptook by injured hEndoSCs and quantitative uptake ratio of hUCMSC-Exos. (a) Confocal microscopy detection of PKH26-labelled hUCMSC-Exos uptake by hEndoSCs at different time points. (b) The uptake of hUCMSC-Exos by hEndoSCs is time-dependent. (c) hUCMSC-Exos are adsorbed and engulfed in injured hEndoSCs.
