Prolonged pregnancy.
D000818:Animals; D002417:Cattle; D005260:Female; D005315:Fetal Diseases; D010920:Placenta / Q000378:metabolism; D010922:Placenta Diseases; D011247:Pregnancy; D011272:Pregnancy, Multiple; D011273:Pregnancy, Prolonged / Q000235:genetics / Q000378:metabolism; D012756:Sheep; D013552:Swine