Fig. 1From: Intra-articular injection of loaded sPL sustained-release microspheres inhibits osteoarthritis and promotes cartilaginous repairsCharacterization of loaded sPL microspheres. a An SEM image of the indicated microspheres. b Load rate and encapsulation rate of L1 and L2 microspheres. c The time-dependent release of IGF, TGF and VEGF from L0, L1 and L2. d Light micrograph of chondrocytesBack to article page