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Fig. 15 | BMC Evolutionary Biology

Fig. 15

From: The nervous system of the lophophore in the ctenostome Amathia gracilis provides insight into the morphology of ancestral ectoprocts and the monophyly of the lophophorates

Fig. 15

Innervation of tentacles in Amathia gracilis. Ultrathin transverse sections of the middle part of tentacles. a Frontal zone with the medio-frontal tentacle nerve. b Abfrontal zone with the abfrontal neurite bundle. c Abfrontal neurite bundle associated with the large perikaryon-like cell. Abbreviations: af - abfrontal neurite bundle; cu - cuticle; ECM - extracellular matrix; ept - epithelium; hd - hemidesmosoma; lcc - lining of coelomic cavity; mf - medio-frontal tentacle nerve; mi - microvilli; pkl - perikaryon-like cell; ppk - projections of perikaryon-like cell

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