Fig. 1From: Specific markers and properties of synovial mesenchymal stem cells in the surface, stromal, and perivascular regionsSurface, stromal, and perivascular regions of human synovium. a Diagram and H&E-stained histological image of synovium. b Transmission electron microscope (TEM) images. Surface of the synovium is indicated by dashed line. Around a stromal cell, collagen fibrils are indicated by an arrowheadBack to article page