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Uploaded by · Pedro Machado [+]

Figure legend

Cross section and diagram (modified from Bairati and Bacetti, 1965) of mature sperm axial filament. In Fig. 7a the assymetrical structure of the sperm plasma membrane (Sm) is very evident. POF = primary outer fibre; G = granular electronopaque material surrounding the outer fibre; Af = Afzelius spokes; SF = secondary fibre; PCF = primary central fibres; PPF = primary fibres of the peripherl doublets. Glutaraldehyde-osmium fixation, Vestopal embedding. X 120,000.

Figure notes

Legend notes: Primary outer fibre (POF)- accessory MT; Afzelius spokes (Af) - radial spokes; Secondary fibre (SF) - spoke tips; Primary central fibres (PCF) - central pair MTs Primary fibres of the peripherl doublets (PPF) - MT doublets

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 05/09/2013.

Image annotation

  • Cilium
    • Axoneme
      • Number of axonemes

        1
      • Fold symmetry

        9
      • Number of microtubules

        3
      • Radial spokes

        Yes
      • Inner dynein arms

        Yes
      • Outer dynein arms

        Yes
      • Projections to membrane

        Yes
      • Accessory microtubules

        Yes

Image extra structures

  • Extra structures · no extra structures