Title

Ultrastructural evidence for peptidergic innervation of the apical region of frog olfactory epithelium

Document Type

Article

Publication Date

1989

Publication Title

Brain Research

Volume

492

Issue

1–2

First Page

361

Last Page

365

DOI

10.1016/0006-8993(89)90920-7

Abstract

Ultrastructural examination of the region near the olfactory epithelial surface of leopard frogs revealed the presence of nerve terminals just proximal to the zonula adherens between adjacent sustentacular cells, and between sustentacular cells and olfactory receptor neurons. Terminal varicosities, located about 20 nm from sustentacular cell membranes, contained numerous large-diameter dense-cored vesicles, small-diameter agranular vesicles, and mitochondria. On the basis of ultrastructural characteristics, they are identified as peptidergic sensory terminals.

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