title: Ultrastructural and cytochemical analysis for adenyl cyclase in frog choroid plexus.
abstract: An ultrastructural and cytochemical analysis of the anterior choroid plexus in adult Rana esculenta was undertaken. The epithelial cells are implicated in the production of cephalorachidian liquid by transporting metabolites from the blood and by synthesizing and secreting activity. The epithelial cells are also capable of re-absorbing catabolites from the cephalorachidian liquid. The presence of adenylate cyclase, along the basal and lateral membranes in some epithelial cells and along the apical membranes of others, leads us to hypothesize that the epithelium of the plexus is made up of two cell types, one type with a secretory function and another type with an absorption function.
authors.affiliation: Institute of Comparative Anatomy, University of Perugia, Italy.
authors.forename: R M
authors.initials: RM
authors.lastname: Farnesi
authors.forename: S
authors.initials: S
authors.lastname: Tei
authors.forename: D
authors.initials: D
authors.lastname: Vagnetti
authors.forename: M G
authors.initials: MG
authors.lastname: Appolloni
authors.forename: C
authors.initials: C
authors.lastname: Roscani
authors.forename: B
authors.initials: B
authors.lastname: Santarella
mesh_terms: D000262:Adenylyl Cyclases / Q000032:analysis*; D000818:Animals; D002831:Choroid Plexus / Q000201:enzymology* / Q000648:ultrastructure*; D004847:Epithelial Cells; D004848:Epithelium / Q000201:enzymology; D006651:Histocytochemistry; D011893:Rana esculenta
chemical_list: D000262:Adenylyl Cyclases