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, 155 (1), 147-52

The Habenular Nuclei of the Elasmobranch "Scyllium Stellare": Myelinated Perikarya

The Habenular Nuclei of the Elasmobranch "Scyllium Stellare": Myelinated Perikarya

M Kemali et al. Am J Anat.

Abstract

Some habenular cells of the elasmobranch, Scyllium stellare, have a perikaryon completely enveloped by myelin of the compact type. They are found only in the left habenula and not in the right. The myelin sheath accompanies the proximal segment of the process arising from the perikaryon, in a node of Ranvier-like pattern. The identity of these myelinated cells and the functional significance of their myelination are unknown.

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