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Observations on the histogenesis of nervous tissue inDiphyllobothrium dendriticum Nitzsch, 1824 (Cestoda, Pseudophyllidea)

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Summary

The model of growth of the populations of cells within and immediately surrounding the main lateral nerve cords in the actively growing, immatureDiphyllobothrium dendriticum was studied by the use of3H-thymidine autoradiography. The population of nerve cells within the nerve cord grows only on account of cell migration from the surrounding parenchyma. No mitotic figures were observed in the nerve cords. The rate of growth is high. Within a period of cultivation for 2 days in hamster 34% of the nerve cells within the nerve cords have arrived from the parenchyma. These cells can be considered as cells at the starting point for differentiation into nerve cells. The protective layer of binding cells around the nerve cords also grows on account of cells migrating from the parenchyma. The binding cells actively move from the outer regions of the layer inwards close to the nerve cord.

As stem cells for these types of cell differentiation serve the highly basophilic, actively dividing germinative cells.

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  1. Institute of Biology, Åbo Akademi, Porthansgatan 3, SF-20500, Åbo, Finland

    Margaretha K. S. Gustafsson

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  1. Margaretha K. S. Gustafsson
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Gustafsson, M.K.S. Observations on the histogenesis of nervous tissue inDiphyllobothrium dendriticum Nitzsch, 1824 (Cestoda, Pseudophyllidea). Z. F. Parasitenkunde 50, 313–321 (1976). https://doi.org/10.1007/BF02462975

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  • DOI: https://doi.org/10.1007/BF02462975

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