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Immunohistochemical studies of all factors
(a) Immunohistochemical studies of IL-6, HIF-1α, TNF-α, NF-κB, and VEGF in the R-K and R-O groups. In the R-K group, the expression of all these inflammatory factors was higher than that in the R-O group. (b) Percentage of positively stained cells. Data are expressed as mean±SD (R-O group, n=8; R-K group, n=15). *** P<0.001, vs. the R-K group
