Fig. 6
ELISA assay of expression levels of IL-1β (a), TNF-α (b), IL-6 (c), MMP-3, MMP-13 in chondrocyte supernatant stimulated by IL-1β for 1 h followed by incubation with complete medium with CSL, HMSNs, HMSNs-Cs and CSL@HMSNs-CS (CHC) at equivalent CSL concentrations (10 μg/mL) for 24 h. (*p < 0.05; **p < 0.01)