The placenta and low birth weight.
D002824:Chorionic Villi / Q000648:ultrastructure; D005260:Female; D006801:Humans; D007230:Infant, Low Birth Weight; D007231:Infant, Newborn; D008854:Microscopy, Electron; D008855:Microscopy, Electron, Scanning; D010920:Placenta / Q000098:blood supply / Q000473:pathology* / Q000648:ultrastructure; D010922:Placenta Diseases / Q000473:pathology; D011247:Pregnancy; D014427:Twins