Nidamental Gland Secreting the Dog-Fish Egg-Shell

  • M. Rusaouën-Innocent
Part of the NATO ASI Series book series (NSSA, volume 93)


The nidamental gland of the dog-fish (Fig. 1) secretes an egg-case whose median layer is composed of a collagenic material1,2 of sheets displaying a plywood structure3. We have observed the extrusion of the collagenic protein by scanning electron microscopy and tried to locate the sites where the precursors of this material are being synthesized.


Byssal Thread Multilayered Plate Oviduct Epithelium Cell BioI Lumen Gland 
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Copyright information

© Plenum Press, New York 1985

Authors and Affiliations

  • M. Rusaouën-Innocent
    • 1
  1. 1.Laboratoire d’Histologie et Cytologie des Invertébrés MarinsUniversité P. et M. CurieParisFrance

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