Fig. 5From: Effects of osteochondral defect size on cartilage regeneration using a double-network hydrogelHigh-magnification (10× original magnification) histological observations at the lateral border area of DN gel-implanted defects of G-III at 4 and 12 weeks (a, c: HE, b, d: Safranin-O). Black scale bar = 200 μmBack to article page