Fig. 6.

The effect of exogenous progesterone treatment on the gestational profile of full-length versus caspase 3-cleaved (A) smooth muscle α-actin and (B) smooth muscle γ-actin in the pregnant mouse uterus. Representative Western blots of the full length smooth muscle α- and γ-actins and their caspase 3-cleaved fragments are shown. The levels of smooth muscle α- and γ-actin were normalized to calponin. Data are presented as mean ± SD ROD for smooth muscle α- and γ-actin caspase 3-cleaved fragments. *Control samples significantly different from progesterone-treated samples (P < 0.05).