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Exosomes derived from UMSCs could transfer lncRNA H19 to chondrocytes. A, The expression of lncRNA H19 in UMSCs and exosomes was detected by qRT‐PCR. **P < .01 compared with the control group. B, The expression of lncRNA H19 in exosomes treated with RNase A or Triton X‐100. **P < .01 compared with the control group. C, Uptake of PKH67‐labeled exosomes in chondrocytes was observed by confocal fluorescence microscopy; scale bar: 50 μm. The data are shown as mean ± SD (n = 3)
