Ultrastructure of cell types of the olfactory epithelium in a catfish, Heteropneustes fossilis (Bloch)

摘要

Transmission electron microscopical study of olfactory epithelium of a mud-dwelling catfish, Heteropneustes fossilis (Bloch) shows receptor, supporting, goblet and basal cells. The receptor cells are of ciliated and microvillous type. Both ciliated and microvillous receptor cells are provided with olfactory knob. The dendrite of all the receptor cells hears many longitudinally arranged microtubules. Occurrence of the rod cell and its function is quite debatable. Specialized juctional complexes between the receptor and adjacent cells are clearly noted. The supporting cells are both ciliated and nonciliated.