[The use of radioactive isotopes in the study of placental permeability].
D000818:Animals; D005260:Female; D006801:Humans; D008322:Mammals; D010539:Permeability; D010920:Placenta / Q000502:physiology*; D011247:Pregnancy; D011868:Radioisotopes
D011868:Radioisotopes
PLACENTA/physiology; RADIOISOTOPES