Figure 5.

LH-Induced MAPK Activation Is Reduced in Areg^−/− Egfr^wa2/wa2 Preovulatory Follicles

LH-induced MAPK phosphorylation was analyzed by Western blot using proteins extracted from wild-type (Areg^+/+ Egfr^+/+), Areg^+/+ Egfr^wa2/wa2, and Areg^−/− Egfr^wa2/wa2 POFs that were cultured in the absence or presence of 5 IU rLH for 2 h. The ratios of phosphorylated MAPK to total MAPK levels were normalized to the wild-type level after 2 h rLH stimulation. Data represent the mean ± sem of five separate experiments. *, P < 0.001.