Summary
In the 45 μ long midpiece of the spermatozoon of Pantodon buchholzi nine helical, cross-striated fibers run from one end to the other and parallel nine helical mitochondrial threads; both fibers and mitochondrial threads surrounding the axoneme. The fibers have a major period about 750–900 Å and are very similar to ciliary rootlets and other cross-striated structures in terms of which they are discussed.
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van Deurs, B. Helical, striated rootlets in the midpiece of a teleost fish spermatozoon. Z. Anat. Entwickl. Gesch. 140, 11–17 (1973). https://doi.org/10.1007/BF00520714
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DOI: https://doi.org/10.1007/BF00520714