title: Tracer in cisternal cerebrospinal fluid is soon detected in choroid plexus capillaries.
abstract: Horseradish peroxidase was detected in the choroid plexus capillary 5 min after the onset of a 2 1/2-min injection of 7.5 microliter of 40% solution into the cisterna cerebellomedullaris in mice. Venous capillaries in the capillary beds of circumventricular organs including the choroid plexus were indicated as sites of cerebrospinal fluid absorption.
mesh_terms: D000818:Animals; D001370:Axonal Transport; D002196:Capillaries / Q000166:cytology / Q000648:ultrastructure; D002831:Choroid Plexus / Q000098:blood supply*; D006735:Horseradish Peroxidase / Q000097:blood / Q000134:cerebrospinal fluid*; D051379:Mice; D008815:Mice, Inbred Strains; D010544:Peroxidases / Q000134:cerebrospinal fluid*
chemical_list: D006735:Horseradish Peroxidase; D010544:Peroxidases