Fig 2: (A) Western blot analysis of LIF and Ang-2 protein expression in the four groups. (B) LIF and (C) Ang-2 protein expression levels were quantified using densitometry. All of the densities were normalized against GAPDH. aP<0.05, compared with LIF protein expression on D3; bP<0.05, compared with LIF protein expression on D4. Data are expressed as the mean ± standard error of the mean (n=6 in each group). LIF, leukemia-inhibitory factor; Ang-2, angiopoietin-2; COH, controlled ovarian hyperstimulation; BSHXD, Bu Shen Huo Xue Decoction; D, day.