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Digitale Medien

Epithelial cells of Hydra are dye-coupled (1981)

Fraser, Scott E. ; Bode, Hans R.

[s.l.] : Nature Publishing Group

Nature 294 (1981), S. 356-358

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ISSN: 1476-4687

Quelle: Nature Archives 1869 - 2009

Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik

Notizen: [Auszug] The body column of Hydra consists of two layers of epithelial cells, the epidermis and the gastrodermis, arranged in a cylindrical shell with the epidermis on the outside and the gastrodermis lining the gastric cavity. The cells of both layers possess large vacuoles; results of light and electron ...

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1038/294356a0

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Digitale Medien

Head regeneration and polarity reversal inHydra attenuata can occur in the absence of DNA synthesis (1984)

Cummings, Susan G. ; Bode, Hans R.

Springer

Development genes and evolution 194 (1984), S. 79-86

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ISSN: 1432-041X

Schlagwort(e): Hydra ; Morphallactic regeneration ; Polarity reversal ; DNA synthesis ; Epithelial cells

Quelle: Springer Online Journal Archives 1860-2000

Thema: Biologie

Notizen: Summary Regeneration in hydra is considered to be morphallactic because it can occur in the absence of cell division. Whether DNA synthesis is required for regeneration or other repatterning events is not known. The question was investigated by blocking DNA synthesis with hydroxyurea and examining several developmental processes. Head regeneration, reversal of regeneration polarity and battery cell differentiation all took place in the absence of DNA synthesis. Hence, morphallactic regulation in hydra is independent of both DNA synthesis and mitosis.