Electron microscopic study of the optic tentacle collar cells of the snail Helix aspersa and immunolocalization of methionine enkephalin-like material in their granular content |
| |
| Institution: | 1. Lehrstuhl für Bodenkunde, Department für Ökologie und Ökosystemmanagement, Wissenschaftszentrum Weihenstephan für Ernährung, Landnutzung und Umwelt, Technische Universität München, D-85350 Freising-Weihenstephan, Germany;2. Centrum für Energietechnologie Brandenburg e.V., Friedlieb-Runge-Strasse 3, D-03046 Cottbus, Germany;3. Department of Biogeochemistry, WSL, Swiss Federal Institute of Forest, Snow and Landscape Research, Zürcherstr. 111, 8903 Birmensdorf, Switzerland;4. Brandenburg University of Technology at Cottbus, Faculty of Environmental Sciences and Process Engineering, Central Analytical Laboratory, Konrad-Wachsmann-Allee 6, 03046 Cottbus, Germany;5. Chair of Soil Protection and Recultivation, Brandenburg University of Technology, Konrad-Wachsmann-Allee 6, D-03046 Cottbus, Germany;6. Institute for Advanced Study, Technische Universität München, Lichtenbergstrasse 2a, D-85748 Garching, Germany |
| |
| Abstract: | An ultrastructural and immunocytological study was carried out on the collar cells of the optic tentacle of Helix aspersa. These cells are supposed to be the source of a reproduction controlling hormone. The immunocytological study was performed using an anti-methionine enkephalin antibody obtained from rabbits in our laboratory. The collar cells are characterized by an enlarged rough endoplasmic reticulum, numerous mitochondria and Golgi bodies surrounded by secretory vesicles, suggesting an intense synthesizing activity. Their principal feature consists of numerous various-sized granules where methionine enkephalin immunoreactivity is localized. No classical neurosecretory granules are observed while synapse-like structures are often encountered. The cells should not be regarded as neurosecretory cells but rather as glandular cells which could ensure different functions, one in relation to reproduction, and another in relation to perception processes, particularly as they contain methionine enkephalin-like material. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
