Summary
Two types of nerve cells, namely, neurosensory and neurosecretory cells have been identified and described in the gastrodermis of Hydra pseudoligactis. The morphological criteria used for the identification of gastrodermal nerves are based on those presented previously for epidermal nerves. The third type of nerve cell in the epidermis, ganglionic cells, was not observed in these studies. The distribution, function and origin of gastrodermal nerve cells are discussed briefly.
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Burnett, A. L., Diehl, N. A.: The nervous system of Hydra, I. Types, distribution and origin of nerve elements. J. exp. Zool. 157, 217–226 (1964a).
—: The nervous system of Hydra, III. The initiation of sexuality with special reference to the nervous system. J. exp. Zool. 157, 237–250 (1964b).
—, Diehl, F. A.: The nervous system of Hydra, II. Control of growth and regeneration by neurosecretory cells. J. exp. Zool. 157, 227–236 (1964).
Caulfield, J. B.: Effects of varying the vehicle of OsO4 in tissue fixation. J. biophys. biochem. Cytol. 3, 827–830 (1957).
Davis, L. E.: Differentiation of neurosensory cells in Hydra. J. Cell Sci. 5, 699–726 (1969).
—: Differentiation of ganglionic cells in Hydra. J. exp. Zool. 176, 107–128 (1971).
—, Burnett, A. L., Haynes, J. F.: A histological and ultrastructural study of the muscular and nervous system in Hydra. II. Nervous system. J. exp. Zool. 167, 295–332 (1968).
Hyman, L. H.: The invertebrates: Protozoa through Ctenophora. New York: McGraw-Hill Book Co., Inc. 1940.
Lentz, T. L.: The fine structure of differentiating interstitial cells in Hydra. Z. Zellforsch. 67, 547–560 (1965).
—: The cell biology of Hydra. New York: American Elsevier Publishing Co. 1966.
—, Barrnett, R. J.: Fine structure of the nervous system in Hydra. Amer. Zool. 5, 341–356 (1965).
Loomis, W. F., Lenhoff, H.: Growth and sexual differentiation of Hydra in mass culture. J. exp. Zool. 132, 555–574 (1956).
Reynolds, E.: The use of lead citrate at high pH as an electron-opaque stain in electron microscopy. J. Cell Biol. 17, 208–212 (1963).
Rose, P. G., Burnett, A. L.: A electron microscopic and radioautographic study of hyposomal regeneration in Hydra viridis. Wilhelm Roux' Archiv 161, 298–318 (1968).
—: The origin of mucous cells in Hydra viridis. II. Mid-gastric regeneration and budding. Wilhelm Roux' Archiv 165, 177–191 (1970).
Sabatini, D. D., Bensch, K., Barrnett, R. J.: Cytochemistry and electron microscopy. The preservation of cellular ultrastructure and enzymatic activity by aldehyde fixation. J. Cell Biol. 17, 19–58 (1963).
Spurlock, B. O., Kattine, B., Freeman, J.: Technical modifications in Maraglas embedding. J. Cell Biol. 17, 203–207 (1963).
Watson, M. L.: Staining of tissue sections for electron microscopy with heavy metals. J. biophys. biochem. Cytol. 4, 475–478 (1958).
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With the technical assistance of Linda M. Bookman.
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Davis, L.E. Ultrastructural evidence for the presence of nerve cells in the gastrodermis of Hydra . Z.Zellforsch 123, 1–17 (1972). https://doi.org/10.1007/BF00337670
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DOI: https://doi.org/10.1007/BF00337670