Fig. 12

Lophophoral and tentacle innervation in Cinctipora elegans. CLSM, staining of acetylated alpha-tubulin (green) and cell nuclei (DAPI, blue). Abfrontal tentacle nerves are partially highlighted in red. The basal neurite bundle and perikaryon is highlighted in white. a Optical section of a stack through the cerebral ganglion and adjacent lateral ganglia (outlined). b Close-up of a virtual cross-section of tentacles (one outlined) close to the lophophoral base showing the tentacle nerves and inner peritoneal neurite bundles. c Maximum intensity projection image of few optical sections of the lophophoral base showing different traverses of the roots of the abfrontal tentacle nerve. d Projection of few optical sections showing an almost longitudinal section of an intertentacular area showing the basal neurite bundle and perikaryon at its end. e Optical section of the lophophoral base showing different thicknesses of the abfrontal nerve roots and the basal radial neurite bundle. f Optical section of the median plane of a tentacle showing distinct thin neurite bundles in the inner ‘peritoneal’ area. Abbreviations: af – abfrontal neurite bundle, bn – basal neurite bundle, bp – basal perikarya, cg – cerebral ganglion, fn – frontal nerves, if – intertentacular fork, ip – inner ‘peritoneal’ neurites, itb – intertentacular base, lc – lateral cilia, lf - latero-frontal nerve of the tentacle, lg – lateral ganglia, mf – medio-frontal nerve of the tentacle