The effect of circadian rhythm changes on fetal and placental development (experimental study).
OBJECTIVE: To investigate the effect of circadian rhythm changes on fetal-placental development in pregnant rats.
MATERIAL AND METHOD: Pregnant rats were randomly allocated to 4 groups with 10 rats in each group. Group 1: 12 hours light 12 hours dark period (n:10, Control Group); Group 2: 6 hours light 6 hours da.....