Figure 2.

Serum progesterone (A) and Rgc32 mRNA levels (B) in the PRL ablation-replacement model of induced luteal regression. Group treatments are indicated across the abscissa; ovaries collected on PSP4 were fully functional, ovaries collected on PSP7 were functionally normal or functionally regressed (without or with bromocriptine treatment, respectively), and ovaries collected on PSP10 were functionally regressed (bromocriptine without PRL replacement) or functionally and structurally regressed (bromocriptine with PRL replacement). The levels of progesterone concentrations were measured in serum obtained from each animal (mean ± sem; n = 5 animals per time point). Relative levels of mRNA for Rgc32 were normalized to the L32 band in each sample (mean ± sem; n = 5 independent animals). Bars with no common superscripts are significantly different (P < 0.05).