Figure 7.

Evaluation of NF-κB p65 expression levels in cartilage samples. NF-κB p65 subunit expression levels in chondrocytes of cartilage samples were detected by immunohistochemistry with p65-specific antibodies. Representative images of the (A) control, (B) normal saline, (C) Ket₆₀, (D) Ket₁₀₀ and (E) Ket₂₀₀ groups are presented (magnification, ×400). (F) Positive rate (%) of NF-κB p65 in each group was calculated from eight randomly selected microscopic fields ^ΔP<0.01 vs. the normal control group; ^▲P<0.01 vs. the normal saline group; ^*P<0.01 vs. the Ket₆₀ group; ^◻P<0.01 vs. the Ket₁₀₀ group. NF, nuclear factor.