Fig. 4From: Effects of osteochondral defect size on cartilage regeneration using a double-network hydrogelHigh-magnification (20× original magnification) histological observations at the lateral border area of DN gel-implanted defects of G-II at 4 and 12 weeks (a, c: HE, b, d: Safranin-O). The regenerated cartilage was integrated with the adjacent cartilage. Black scale bar = 100 μmBack to article page