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Uploaded by · Pedro Machado [+]

Figure legend

Figure 4 Proximal-to-distal serial cross sections through the nucleus (Fig. 4a) and the neck (Figs. 4b to 4g) in a mature sperm, showing the relationships among nucleus (N), centriole derivative (C), principal mitochondrial derivative (M') and second mitochondrial derivative (M''). A, B, C = A-, B-, C-fibre of the centriole derivative triplets. d = dense lines connecting a triplet with two others. g = granular material present within the nucleus indentation and surrounding the neck components. Nm = nuclear membrane; Sm = sperm plasma membrane; SF = secondary fibres. Glutaraldehyde-osmium fixation, Vestopal embedding. X 120,000.

Figure notes

The sections do not appear to be strictly serial.

Image details

Image summary

  • Species · Drosophila melanogaster
  • Reference · M. Elisa Perotti, J Submicr. Cytol, 1969 (not indexed on Pubmed or CrossRef)
  • Submitted by · Pedro Machado on 08/09/2010.
  • Published by · Marc Gouw on 05/14/2013.

Image annotation

  • Cilium
    • Motile

      Yes
    • Immotile

      No
    • Axoneme
      • Number of axonemes

        1
      • Fold symmetry

        9
      • Number of microtubules

        3
      • Central microtubules

        2
      • Inner dynein arms

        Yes
      • Projections to membrane

        Yes
      • Accessory microtubules

        Yes

Image extra structures

  • Extra structures · no extra structures