“…Using pregnant human myometrium, Embrey and Morrison (241) reported that both PGEz and PGFz, stimulated myometrial contractility in vitro. In vivo administration of PGEI, PGE2, PGFl,, and PGF2, had a stimulatory effect on the uterus (242)(243)(244)(245). In vivo administration of PGEI, PGE2, PGFl,, and PGF2, had a stimulatory effect on the uterus (242)(243)(244)(245).…”