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- W2399486579 abstract "Testis of the Teleostean fish Trisopterus minutus capelanus has been examined to study the organization of the seminiferous tubules and the ultrastructural features of the germ cells. The testis is shown to be composed of seminiferous tubules full of cells: only few of them have just a very narrow lumen. Each tubule is divided by thin septa of connective tissue in zones containing homogeneous cells; such an organization is confirmed by ultrastructural images showing groups of synchronously developing germ cells. By morphological characterization of the germ cells found in each zone, 6 maturation stages have been identified. During spermiogenesis, a progressive shrinkage of germ cells and a nuclear chromatin condensation have been observed. Intercellular bridges, homogeneously dispersed granules of glycogen and groups of mitochondria associated with dense granular material have been described. Such features are present in the earlier stages of spermiogenesis and are retained until the later stages of spermatid differentiation. The spermatozoon shows a lack of acrosome as in many other teleosts previously studied." @default.
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- W2399486579 date "1991-09-01" @default.
- W2399486579 modified "2023-09-23" @default.
- W2399486579 title "[Initial observations on the organization of the testis of Trisopterus minutus capelanus]." @default.
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