alexa Ultrastructural analysis of nematocyte removal in Hydra.
General Science

General Science

Biological Systems: Open Access

Author(s): Lyon MK, KassSimon G, Hufnagel LA, Lyon MK, KassSimon G, Hufnagel LA

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Abstract A consecutive series of ultrathin sections through the distal one-third of a Hydra tentacle has revealed at least four categories of nematocytes: (1) normal, mounted nematocytes, in specific arrangements within the battery cells; (2) degenerating nematocytes, within the battery cells; (3) mature nematocytes, enclosed within endodermal cells: (4) a mature nematocyte, in the enteric cavity. The degenerating nematocytes within the battery cells and the nematocytes in the endoderm and enteric cavity appeared to be aging nematocytes undergoing death and removal. The results provide the first ultrastructural evidence for nematocyte degeneration within battery cells and also suggest phagocytosis of mature nematocytes by endodermal cells.
This article was published in Tissue Cell and referenced in Biological Systems: Open Access

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