File:BurgosFawcett1955 fig13.jpg

Fig. 13. A transverse section through the postnuclear region of an advanced spermatid

Showing in the center of the figure a cross-section of the tail flagellum surrounded by a pair of membranes. The larger ring in the spermatid cytoplasm is the so called caudal sheath or manchette. This is not a continuous membrane, as often described, but a cylindrical aggregation of delicate filaments. X 29,506. When examined at very high magnification these appear to be tubular. (See inset A.) X 65,000.

Reference

Burgos MH. and Fawcett DW. Studies on the Fine Structure of the Mammalian Testis I. Differentiation of the Spermatids in the Cat (Felis Domesrica) (1955) J. Biophxsic. Biochem. Cytol. 1(4): 287-300. PMID 13242594

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