Conflicting theories of the foetal circulation, with special reference to the foramen ovale.
D001775:Blood Circulation; D002319:Cardiovascular System / Q000254:growth & development*; D005312:Fetal Blood; D005333:Fetus / Q000098:blood supply*; D054085:Foramen Ovale; D006330:Heart Defects, Congenital; D006801:Humans
CARDIOVASCULAR SYSTEM/development; FETUS/blood circulation; HEART/abnormalities