title: Lack of correlation between tight junction morphology and permeability properties in developing choroid plexus.
mesh_terms: D000818:Animals; D002831:Choroid Plexus / Q000196:embryology / Q000378:metabolism / Q000648:ultrastructure*; D005614:Freeze Fracturing; D005865:Gestational Age; D008854:Microscopy, Electron; D010539:Permeability; D012756:Sheep