FIG. 4.

A) Changes in serum P4 levels before (Day 9) and during 3 days of treatment with Antide alone or with the synthetic progestin R5020 (A+R5020) or E2 receptor agonists DPN/PPT (A+DPN/PPT) during the mid-late luteal phase (mean ± SEM; n = 3–4/group). Note that the radioimmunoassay used to detect endogenous P4 levels does not recognize synthetic progestin R5020. Different lowercase letters indicate significant differences within treatment group by day (P < 0.05). B) Wet weight of CL collected from each treatment group before dispersal into cell preparations. Different uppercase letters indicate significant differences in weight by treatment (P < 0.05). C) Total numbers of cells recovered from enzymatic dispersal of luteal tissue from CL of each treatment group. Numbers above the columns indicate percentage of viability of dispersed cells (mean ± SEM). There were no significant differences in number of cells recovered (P > 0.3) or percentage of viability (P > 0.17) by treatment.