Beading Phenomena of Mammalian Myelinated Nerve Fibers

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Science  15 Feb 1963:
Vol. 139, Issue 3555, pp. 599-600
DOI: 10.1126/science.139.3555.599


Fresh mammalian nerve, when subjected to a small stretch, shows a beading phenomenon. The larger fibers appear as a series of dilations and constrictions at intervals of 40 to 75 µ. Upon relaxation this beading is gone within a minute. The beading is not produced by the special technique of freeze-substitution used to show the phenomenon.