Fig. 4

Effect of PA on ER stress-related protein expression in mouse granulosa cells. a Expression of GRP78 and CHOP in mouse granulosa cells after treatment with different doses of PA (100-800 μM) for 24 h. b Relative expression of GRP78 after treatment with different doses of PA (100-800 μM) for 24 h. c Relative expression of CHOP after treatment with different doses of PA (100-800 μM) for 24 h. Protein expression was normalized to the level of β-actin expression. The statistical analysis results are shown in the bar graphs. Data are presented as the mean ± SEM of three independent experiments. Bars with different letters are significantly different (p < 0.05)