Fig. 7From: A pH-responsive metal-organic framework for the co-delivery of HIF-2α siRNA and curcumin for enhanced therapy of osteoarthritisRepresentative A H&E staining, B safranin O/fast green staining, and C toluidine blue staining of the cartilage sections after treatment of osteoarthritis using saline, MC, MS, and MCS NPs at weeks 4 and 8 after surgery. Score based on OARSI after treatment for D four weeks and E eight weeksBack to article page