Fig. 11
From: The complex simplicity of the brittle star nervous system
Organization of the spine ganglion in A. kochii. Transmission electron microscopy. a Peripheral part of the spine ganglion with cell bodies of neurons and two types of neurosecretory-like cells. b The central neuropil area of the spine ganglion with nerve processes of spine nerve passing through. c Synapses (arrows) between a neural process and processes of neurosecretory-like cells. d Basal body of a cilium in a neurosecretory cells. e Glial cells at the periphery of the ganglion. Abbreviations: gc – glial cell; n – neuron; nsc I – neurosecretory-like cell type I; nsc II – neurosecretory-like cell type II