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Fig. 2 | BMC Musculoskeletal Disorders

Fig. 2

From: Serum periostin level is not sufficient to serve as a clinically applicable biomarker of osteoarthritis

Fig. 2

Periostin expression in human OA cartilage in different compartments. a Histological characterization of the clinical samples. Images in the black frame are the representative HE images of the areas in the red frame, bars = 250 µm. b Representative periostin immunostaining images of human OA cartilage. Right panels (b3 b4) are high magnification images of the red frames in b1 b2, respectively. The bars represent 100 µm in b1 b2 and 50 µm in b3 b4, respectively. c Semi-quantitative results of periostin expression in human cartilages. IOD, integrated optical density; M, medial compartment; L, lateral compartment; OA, osteoarthritis

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