title: [Polarization microscopic studies of the fine structure of the maternal-fetal barrier in normal human placentas depending on gestational age].
abstract: The submicroscopic structure of the throphoblast basement membrane and the collagen in the chorionic villi of human placentas was investigated by polarization microscopic technique. The study establishes a quantitatively measurable difference in the submicroscopic range of the placental membrane in relation to histologically classified disturbances of maturity.
mesh_terms: D001485:Basement Membrane / Q000648:ultrastructure; D002824:Chorionic Villi / Q000648:ultrastructure*; D003094:Collagen / Q000032:analysis; D005260:Female; D005865:Gestational Age; D006801:Humans; D008431:Maternal-Fetal Exchange; D008859:Microscopy, Polarization; D010920:Placenta / Q000648:ultrastructure*; D011247:Pregnancy; D014327:Trophoblasts / Q000648:ultrastructure*
chemical_list: D003094:Collagen
vernacular_title: Polarisationsoptische Untersuchengen über den Feinbau der maternofetalen Stoffwechselschranke normaler menschlicher Placenten in Abhängigkeit vom Gestationsalter.