Fig. 9
From: Comparative morphology of the nervous system in three phylactolaemate bryozoans
Details of lophophore innervation and cerebral ganglion in Fredericella sultana. a, b innervation of lophophore base and proximal parts of tentacles (lateral view) (in b roots of main radial nerves are clearly seen) (staining with antibodies against acetylated tubulin); c lophophore innervation (view from oral side showing that circumpharyngeal nerve ring is incomplete and that main neurites of the adjacent bipolar nerves merge together before joining the radial nerves) (staining with antibodies against serotonin); d cerebral ganglion (view from anal side, arrow shows the local area corresponding to lophophore horn from which main radial nerves are emitted) (staining with antibodies against serotonin). Abbreviations: bn, bipolar neurons situated inside tentacle bases; dn, distal branches of main radial nerve; fn, tentacle frontal nerve; ln, lateral branches of main radial nerve; mrn, main radial nerve; n, neuropil of cerebral ganglion; rmrn, roots of main radial nerves. *indicates a visual artifact. Scale bars: (a, c) 100 μm, (b, d) 50 μm