The level of cervical transcripts encoding PGE2 receptors (Ptger1–4) is not influenced by LPS treatment. Gestational day 15 (NT), day 15 mifepristone (MFP), day 15 IU-LPS, gestational day 18 (d18), 2 and 24 hours PP are shown. Data represent the average of four to six cervices for each time point or treatment ± SEM. *, Significance (P ≤ .05) when compared with untreated day 15 cervices.