title: Cytological aspects of different nerve cell somata in the buccal ganglia of Helix pomatia L.
abstract: In early September most of the neurons of the buccal ganglia of Helix pomatia contain neurosecretory material as membrane bound granules. There is only one, in exceptional cases 2 types of granules per cell. This suggests that different types of granules do not change into one another, and that each granule type contains a different secretory product. One granule type contains PAF-positive neurosecretory material, another one catecholamines, but most of the granules cannot be associated with special substances. The identified giant neurons B1-B4 contain granules in less density than the smaller neurons. B1 and B2 resemble each other in their granule type, whereas both B3 and B4 differ from B1 and B2.
mesh_terms: D000818:Animals; D002395:Catecholamines / Q000378:metabolism; D002610:Cheek; D003594:Cytoplasmic Granules / Q000378:metabolism / Q000648:ultrastructure; D005724:Ganglia / Q000166:cytology / Q000378:metabolism; D006372:Helix, Snails / Q000166:cytology*; D009474:Neurons / Q000166:cytology
chemical_list: D002395:Catecholamines