MiR-141 inhibition or TGF-β2 up-regulation represses the apoptosis of bone cells of rats with ONFH. (a) The apoptosis of bone cells of rats in each group detected via TUNEL staining; (b) Quantification results of figure (a) (c). Protein bands of Bcl-2 and Bax in the femoral head tissues of rats of each group; (d) Protein expression of Bcl-2 and Bax in the femoral head tissues of rats of each group detected via western blot analysis; a vs the normal group, P < 0.05; b vs the inhibitors NC group, P < 0.05; c vs the OE-NC group, P < 0.05; d vs the miR-141 inhibitor + siRNA-NC group, P < 0.05. The measurement data were expressed as mean ± standard deviation, and comparison among multiple groups was analyzed by ANOVA.