Two Unique Structures Discovered in the Myelinated Fibers of the Penaeus Shrimp

  • Ke Xu
  • Susumu Terakawa


An extraordinarily wide gap space under the myelin sheath and a unique thin wall were not only found in the fixed nerve fiber preparations, but were also observed in the fresh single nerve fiber preparations of all species of Penaeus shrimp examined. Here, two micrographs are cited from the corresponding papers to show the thin axon with its thin wall in the fresh myelinated single fiber preparations of P. chinensis and P. japonicus, respectively.


Myelin Sheath Bipolar Cell Rest Membrane Potential Myelinated Fiber Myelinated Nerve Fiber 
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Copyright information

© Springer Japan 2013

Authors and Affiliations

  • Ke Xu
    • 1
  • Susumu Terakawa
    • 2
  1. 1.Shanghai Institute of Physiology Chinese Academy of SciencesShanghaiPeople’s Republic of China
  2. 2.Hamamatsu University School of MedicineMedical Photonics Research CenterHamamatsuJapan

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