title: [Changes in serum levels of trace elements in normal pregnancy and placental barrier modulation].
authors.forename: Y L
authors.initials: YL
authors.lastname: Fu
mesh_terms: D000328:Adult; D005260:Female; D005312:Fetal Blood / Q000032:analysis; D006801:Humans; D008431:Maternal-Fetal Exchange; D049590:Postpartum Period / Q000097:blood*; D011247:Pregnancy / Q000097:blood*; D014131:Trace Elements / Q000097:blood*
chemical_list: D014131:Trace Elements