unmyelinated

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unmyelinated

[¦ən′mī·ə·lə‚nād·əd]
(histology)
Lacking myelin, either as a normal condition or as the result of a disease.
References in periodicals archive ?
From their origin in the OM to their termination in the glomeruli of the OB, the nonmyelinated olfactory nerves are associated with OECs, which surround large numbers of contiguous axons [19,22-24].
In the olfactory nerve, OECs surround large numbers of nonmyelinated axons and normally do not form myelin [38].