Cell types of the gastic mucosa of a teleost, the river blackfish, Gadopsis marmoratus

Abstract

The gastric mucosa of G. marmoratus was examined by electron microscopy and cytochemistry. The gastric epithelium is composed of three cell types: surface mucous cells, oxynticopeptic cells, and endocrine cells (with three subtypes identified). These cells show ultrastructural homologies with the major cell types in the gastric mucosa of classes of tetrapod vertebrates. However, one cell type present in stomachs of other vertebrates, but lacking from the blackfish stomach, is the glandular mucous cell.