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Immunohistochemical analysis of COL-II and IL-1β expressions in rat NP. A) Immunohistochemical staining of COL-II at 4 weeks and 8 weeks. B) Immunohistochemical staining of IL-1β at 4 weeks and 8 weeks. C, D) The quantitative analysis of COL-II and IL-1β of different groups at 4 and 8 weeks after molding. *p < 0.05 Vs. MS@MCL group, #p < 0.001 Vs. MS@MCL group, NS Vs. MS@MCL group, not significant.
