Distribution of serotonin-containing neurons in the central nervous system of the snail Helix pomatia |
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Authors: | Dr László Hernádi Károly Elekes Katalin S-Rózsa |
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Institution: | (1) Balaton Limnological Research Institute of the Hungarian Academy of Sciences, H-8237 Tihany, Hungary |
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Abstract: | Summary The distribution of serotonin (5HT)-containing neurons in the central nervous system of the snail Helix pomatia has been determined in whole-mount preparations by use of immunocytochemical and in vivo 5,6-dihydroxy-tryptamine labelling. 5HT-immunoreactive neuronal somata occur in all but the buccal and pleural ganglia. Immunoreactive fibres are present throughout the central nervous system. The 5HT-immunoreactive neuronal somata characteristically appear in groups, located mainly in the cerebral, pedal, visceral and right parietal ganglia. The majority of 5HT-immunoreactive neurons is located in the pedal ganglia. Additionally a dense network of 5HT-immunoreactive varicose fibres is found in the neural sheath of the central nervous system including all the nerves and ganglia. The number and distribution of 5HT-immunoreactive neurons correlates with that demonstrated by 5,6-dihydroxytryptamine labelling method. |
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Keywords: | Serotonin (5HT) Immunocytochemistry 5 6-Dihydroxytryptamine Central nervous system Helix pomatia (Mollusca) |
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