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Fig. 2 | Frontiers in Zoology

Fig. 2

From: The complex simplicity of the brittle star nervous system

Fig. 2

Transition between the radial nerve cord and the circumoral nerve ring in A. kochii. Semi-thin sections stained with methylene blue. a Radial section (parallel to the long axis of the arm). b Horizontal section (i.e., orthogonal with respect to the oral-aboral axis) through the nerve ring. Abbreviations: nr – nerve ring; rnc – radial nerve cord

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