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(A) Transfection efficiency of dopa-HA/CaP/pLuc (w/w = 2) in human mesenchymal stem cells (hMSCs). The bPEI 25 kDa (bPEI25k/pLUC, w/w = 1) and untreated cells were used as controls. Flow cytometry (B) and confocal microscopy (C) results of the cellular uptake of CaP/pLuc and dopa–HA/CaP/pLuc (w/w = 2) in the absence or presence of free HA.
