title: Proceedings: Permeability of sheep placenta to unmetabolized polar non-electrolytes.
mesh_terms: D000818:Animals; D004896:Erythritol / Q000378:metabolism; D005260:Female; D008353:Mannitol / Q000378:metabolism; D008431:Maternal-Fetal Exchange; D008757:Methylglucosides / Q000378:metabolism; D011247:Pregnancy; D014508:Urea / Q000378:metabolism
chemical_list: D008757:Methylglucosides; D008353:Mannitol; D014508:Urea; D004896:Erythritol