FIGURE 2.

PTGS1 protein expression in guinea pig amnion, visceral yolk sac (VYS), placenta and myometrium during late pregnancy. Gestational age in days are indicated below the bars. The 57–65 days and 62–66 days groups correspond to the 1st and 5th days after pubic symphysis separation, respectively. The In labor group was collected after the birth of the first pup. Letters on top of the bars denote significance levels comparing gestational age groups for each tissue (p < 0.05, ANOVA with multiple comparison adjustment, N = 6 animals per group). Reproduced with permission from Welsh et al. (2005).