title: Placental oxygen gradients due to diffusion and chemical reaction.
mesh_terms: D004058:Diffusion; D005260:Female; D005333:Fetus; D006801:Humans; D008431:Maternal-Fetal Exchange; D008433:Mathematics; D010100:Oxygen / Q000097:blood*; D010920:Placenta / Q000098:blood supply* / Q000378:metabolism; D011247:Pregnancy
chemical_list: D010100:Oxygen