THE ULTRASTRUCTURE OF ADULT VERTEBRATE PERIPHERAL MYELINATED NERVE FIBERS IN RELATION TO MYELINOGENESIS | Zendy

J. David Robertson | Zendy

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THE ULTRASTRUCTURE OF ADULT VERTEBRATE PERIPHERAL MYELINATED NERVE FIBERS IN RELATION TO MYELINOGENESIS

Author(s) -

J. David Robertson

Publication year - 1955

Publication title -

the journal of cell biology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.414

H-Index - 380

eISSN - 1540-8140

pISSN - 0021-9525

DOI - 10.1083/jcb.1.4.271

Subject(s) - myelinogenesis , lamella (surface anatomy) , axon , ultrastructure , biology , membrane , myelin , anatomy , cytoplasm , schwann cell , electron microscope , microbiology and biotechnology , biophysics , myelin sheath , neuroscience , central nervous system , biochemistry , physics , optics

Adult chameleon myelinated peripheral nerve fibers have been studied with the electron microscope in thin sections. The outer lamella of the myelin sheath has been found to be connected as a double membrane to the surface of the Schwann cell. The inner lamella is connected as a similar double membrane with the double axon-Schwann membrane. The relations of these double connecting membranes suggest that the layered myelin structure is composed of a double membrane which is closely wound about the axon as a helix. These findings support the new theory of myelinogenesis proposed recently by Geren. The possible significance of these results with respect to cell surface membranes and cytoplasmic double membranes is discussed.

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