Effect of LPS treatment on progesterone receptor (PR) protein levels in uterus.

<p>Mice were injected on day 7 of gestation with vehicle (PBS), LPS (1 µg/g), progesterone (2 mg/mouse) or LPS+progesterone and sacrificed at 6 and 12 after treatment. PRA and PRB protein expression were evaluated in uterine samples by western blot. (<b>A</b>) PRA 6 h, (<b>B</b>) PRA 12 h and (<b>C</b>) PRB 6 h. PR levels are expressed as relative optical density (PR/Actin). n = 6–5. Values are means ± SEM. Bars with different superscript letters denote significant differences (P<0.05). a≠b.