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Fig. 20 | Frontiers in Zoology

Fig. 20

From: The complex simplicity of the brittle star nervous system

Fig. 20

Acetylated tubulin in the peripheral nerves of the arm in O.brevispinum. a Cross section showing the radial nerve cord, horizontal intermuscular hyponeural nerve, and lateral juxtaligamental node. b Longitudinal section showing the oral juxtaligamental node and the bundles of immunopositive processes that originate from this ganglion and innervate the adjacent collagenous connective tissue (arrowheads). c Longitudinal section showing immunopositive neural processes (arrows) innervating the aboral muscle. d Cross section through the podial ganglion and spine nerves. sn. Abbreviations: am – aboral muscle; hin – horizontal intermuscular hyponeural nerve; ljn – lateral juxtaligamental node; ojn – oral juxtaligamental node; om – oral muscle; pd – podium; pg – podial ganglion; pmn – proximal muscle nerve; rnc – radial nerve cord; sn – spine nerves

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