Fig. 3From: Curcumin primed ADMSCs derived small extracellular vesicle exert enhanced protective effects on osteoarthritis by inhibiting oxidative stress and chondrocyte apoptosisCellular uptake capacity of sEV-CUR. a Fluorescence images of cellular uptake assay was captured by a microscopy during a 24-h period after sEV-CUR treatment; b mean fluorescence intensity of curcumin was calculated and analyzed (n = 3); c mean fluorescence intensity of DiI was calculated and analyzed (n = 3). *P < 0.05, **P < 0.01, ***P < 0.01Back to article page