[rahn-vyey, rahn-vyey] /rɑnˈvyeɪ, ˈrɑn vyeɪ/

noun, Cell Biology.
a gap occurring at regular intervals between segments of myelin sheath along a nerve axon.
any of the gaps that occur at regular intervals along the length of the sheath of a myelinated nerve fibre, at which the axon is exposed


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