| Cytological studies of the nematocysts of Hydra. II. The stenoteles. | |
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MedLine Citation:
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PMID: 13630937 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Entire hydras or tentacles were prepared for electron microscopy as described in the preceding paper. The stenotele capsule has been observed to be composed of an external membrane, a thick chitinous or keratin layer, and an inner membrane. A sac-like extension of the capsular wall into the capsule bears spines and stylets on its inner surface and evagination of this structure occurs on discharge. Profiles of tubular or membranous structures often are seen within the capsules of resting stenoteles. These structures are presumably related to the external filament. The spines often reveal a flattened aspect which suggests that at least some of them might more accurately be called "vanes." A cnidocil has been found to accompany each stenotele. This study revealed several aspects of the developmental stages of stenoteles: A vacuole is formed which is nearly surrounded by the nematocyte nucleus. The vacuole content changes in density and a capsular wall is formed at the periphery of the vacuole. Tubules differentiate from the capsular matrix, and spines and stylets develop somewhat later. An operculum is formed from the nematocyte cytoplasm. |
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Authors:
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G B CHAPMAN; L G TILNEY |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: The Journal of biophysical and biochemical cytology Volume: 5 ISSN: 0095-9901 ISO Abbreviation: J Biophys Biochem Cytol Publication Date: 1959 Jan |
Date Detail:
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Created Date: 1959-12-01 Completed Date: 2000-07-01 Revised Date: 2010-06-22 |
Medline Journal Info:
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Nlm Unique ID: 17840020R Medline TA: J Biophys Biochem Cytol Country: Not Available |
Other Details:
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Languages: eng Pagination: 79-84 Citation Subset: OM |
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| MeSH Terms | |
Descriptor/Qualifier:
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Cnidaria* Microscopy, Electron* |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
| Full Text | |
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Journal Information Journal ID (nlm-ta): J Biophys Biochem Cytol ISSN: 0095-9901 Publisher: The Rockefeller University Press |
Article Information Download PDF  Copyright © Copyright, 1959, by The Rockefeller Institute Received Day: 25 Month: 6 Year: 1958 Print publication date: Day: 25 Month: 1 Year: 1959 Volume: 5 Issue: 1 First Page: 79 Last Page: 83 ID: 2224631 PubMed Id: 13630937 |
| Cytological Studies of the Nematocysts of Hydra : II. The Stenoteles | |
| George B. Chapman | |
| Lewis G. Tilney | |
| From The Biological Laboratories, Harvard University, Cambridge |
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