title: Porosity of the guinea-pig placenta and its increase by perfusion [proceedings].
mesh_terms: D000818:Animals; D004896:Erythritol / Q000378:metabolism; D005260:Female; D006168:Guinea Pigs; D008431:Maternal-Fetal Exchange; D010477:Perfusion; D010920:Placenta / Q000378:metabolism*; D011188:Potassium / Q000378:metabolism; D011247:Pregnancy; D012964:Sodium / Q000378:metabolism
chemical_list: D012964:Sodium; D004896:Erythritol; D011188:Potassium