Abstract
THE following observations were made during a search for preparations which would permit assays of various enzymes in tissue samples containing glial cells only. Such an opportunity seemed to be provided by the filum terminale which is commonly considered a glial remnant of the fœtal sacral cord1. Tobias, Clark, and Gerard2 measured the respiration of the filum terminale of the cat and concluded that glial tissue had a rather high rate of respiration, comparable to that of neurones. The filum terminale of Rana catesbiena was used in our work because of its unusual size. A smaller material of 8 specimens of Rana pipiens was also examined with the same results.
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References
Kappers, C. V., Ariens, Huber G. C., and Crosby, E. C., The Comparative Anatomy of the Nervous System of Vertebrates including Man (Hafner, New York, 1960).
Tobias, J. M., Clark, D. B., and Gerard, R. W., Fed. Proc., 1, 85 (1942).
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FRIEDE, R. Fatty Metaplasia of the Filum Terminale of the Frog. Nature 203, 90 (1964). https://doi.org/10.1038/203090a0
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DOI: https://doi.org/10.1038/203090a0
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