Fig. 3
From: Expression and pathological effects of periostin in human osteoarthritis cartilage
Periostin localization in OA fibrotic tissues. Toluidine blue staining (a, c) and periostin immunostaining (b, d, b, d) of human osteoarthritis cartilage and subchondral bone. Right panels (b, d) are high magnification images of the middle panels (b, d), respectively. The inset in the right panels shows the isotype control. Periostin localized fibrotic area on cartilage surface (a, b, b) and in subchondral bone of full-thickness cartilage defect (c, d, d). Bars = 100 μm