Fig. 2

Comparison of fetal rat and placental development. (a) Overall embryonic development of rats in the control group; (b) Overall embryonic development of rats in the L-NAME group, which showed a higher mortality rate among fetal rats and even absorption of ‘fetus’; (c) The fetal rat of control groups. (d) The fetal rat of L-NAME group. (e) The comparison of fetal weight between the control group and the L-NAME group; (f) The comparison of placental weight between the control group and the L-NAME group; (g) The comparison of fetal placental weight ratio between the control group and the L-NAME group, The fetal placental weight ratio is indicative of placental functionality.