Figure 1.

Morphology of bone tissues in the SONFH group and the control group. A, histological observation of the SONFH group and the control group; B, immunohistochemical staining was used to evaluate EZH2 protein in the SONFH group and the control group; C, EZH2 positive rate of the SONFH group and the control group; * P< 0.05 vs the control group; n = 30 in the control group, n = 52 in the SONFH group, the measurement data conforming to the normal distribution were expressed as mean ± standard deviation and the t-test was performed for comparisons between two groups.