Fig. 1From: Vasoactive intestinal peptide alleviates osteoarthritis effectively via inhibiting NF-κB signaling pathwayHistopathologic profiles of rat knee joints in each group by hematoxylin and eosin (HE) staining and Safranin O/fast green staining (a) and OARSI score (b). (Scale bar = 100 μm)Back to article page