Figure 2.

Inhibitory effects of collagen tripeptide, hyaluronan and collagen tripeptide/hyaluronan on osteoarthritis development. (A) Histologies of the medial femoral condylar cartilage stained with safranin-O. Arrow indicates cluster formation (original magnification ×100). (B) Appearance of safranin-O (×100) staining in the medial femoral condylar cartilage from a normal rabbit knee. (C) Osteoarthritis Research Society International (OARSI) {AU Query: Confirm definition} score for medial femoral condylar cartilage lesions in each group 5, 10 and 15 weeks after surgery. Ctp, collagen tripeptide; HA, hyaluronan. Data presented as mean ± standard deviation (*P <0.05).

Naraoka et al. Arthritis Research & Therapy 2013 15:R32   doi:10.1186/ar4181
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