Fig. 1From: Human PMSCs-derived small extracellular vesicles alleviate neuropathic pain through miR-26a-5p/Wnt5a in SNI mice modelHYPERLINK "sps:id::fig1||locator::gr1||MediaObject::0" Experimental design and characterization of human placental mesenchymal stem cell (hPMSC) sEVs. A Intrathecal injection of sEVs derived from human placental mesenchymal stem cells in vitro to induce antinociception in mice. B Typical fibroblastic morphology of hPMSCs was verified by microscope (magnification: 100×). C Transmission electron microscopy images of sEVs (scale bar: 200 nm). D NTA to determine the diameter of hPMSC–sEVsBack to article page