Evolution of the stroma in human chorionic villi throughout pregnancy.
D002824:Chorionic Villi / Q000502:physiology* / Q000648:ultrastructure; D005260:Female; D006128:Growth; D006801:Humans; D008855:Microscopy, Electron, Scanning; D010920:Placenta / Q000502:physiology*; D011247:Pregnancy; D013997:Time Factors