in this work, we tried to know something more about the embryotoxicity effects of the doses of 50, 200, 400 mg/kg/day of ranitidine of (h2 antihistaminic agent) by intraperitoneal administration on mice. the studies were performed on albino mice kept under specific conditions and a constant dark-light cycle at 24+1c and 55+5% relative humidity. generally, the animals were acclimatized for four ...