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FMRFamide-like immunoreactivity in the nervous system of hydra

MPG-Autoren
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Grimmelikhuijzen,  Cornelis J. P.
Max Planck Institute for Medical Research, Max Planck Society;

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Zitation

Grimmelikhuijzen, C. J. P., Dockray, G. J., & Schot, L. P. C. (1982). FMRFamide-like immunoreactivity in the nervous system of hydra. Histochemistry, 73(4), 499-508. doi:10.1007/BF00493364.


Zitierlink: https://hdl.handle.net/21.11116/0000-0005-1C7F-F
Zusammenfassung
FMRFamide-like immunoreactivity has been localized in different parts of the hydra nervous system. Immunoreactivity occurs in nerve perikarya and processes in the ectoderm of the lower peduncle region near the basal disk, in the ectoderm of the hypostome and in the ectoderm of the tentacles. The immunoreactive nerve perikarya in the lower peduncle region form ganglion-like structures. Radioimmunoassays of extracts of hydra gave displacement curves parallel to standard FMRFamide and values of at least 8 pmol/gram wet weight of FMRFamide-like immunoreactivity. The immunoreactive material eluted from Sephadex G-50 in several components emerging shortly before or after position of authentic FMRFamide. The presence of FMRFamide-like material in coelenterates shows that this family of peptides is of great antiquity.