The effect of circadian rhythm changes on fetal and placental development (experimental study). Gozeri E, Celik H, Ozercan I, Gurates B, Polat S, Hanay F. Journal Article 2008; 29(1): 87-90 PubMed PMID: 18283242 Keywords: Animals, Circadian Rhythm:physiology, Female, Fetal Development:physiology, Fetal Weight:physiology, Models, Animal, Organ Size, Photoperiod, Placenta:pathology, Placentation:physiology, Pregnancy, Random Allocation, Rats, Rats, Wistar,. Citation OBJECTIVE: To investigate the effect of circadian rhythm changes on fetal-placental development in pregnant rats. MATERIAL ..... Read abstract Full text PDF