Abstract
M73101 was given orally to pregnant mice (0, 100, 400 and 800mg/kg/day) and rats (0, 100, 300 and 600mg/kg/day) during the major organo-genesis to assess the influences of prenatal and postnatal development of progeny. There were no apparent effects of M73101 on litter size, fetal mortality or sex ratio in both species, although slight decrease in body weight occurred in fetuses of mice and rats exposed to the largest dose. No external, intemal or skeletal malformations attributable to M73101 were observed in mouse and rat fetuses. No apparent influences of M73101 on postnatal development of mouse or rat offspring were seen.
