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The histological staining evaluation of 6 and 12 weeks of osteochondral repair. (a, b) The gross observation results after harvested specimens; (c–f) HE staining sections black wireframes indicated the repairing cartilage and subchondral bone, respectively; (g, h) ICRS scoring of cartilage repairing; (i) The areas of newly formed subchondral bone calculated from the HE images by Image-J software ∗p < 0.05, ∗∗p < 0.01; n = 3.
