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Fig. 9 | BMC Zoology

Fig. 9

From: Histamine and gamma-aminobutyric acid in the nervous system of Pygospio elegans (Annelida: Spionidae): structure and recovery during reparative regeneration

Fig. 9

Schematic representation of HA- and GABA-like elements in body segments and pygidium of Pygospio elegans. The main nerve tracts of the central nervous system are outlined in grey. a HA-like elements of posterior body segments (ventral view). b, c GABA-like elements of posterior body segments, ventral (b) and dorsal (c) views. d 5–6th thoracic segment HA-like elements (ventral view). e GABA-like elements of thoracic segment (ventral view). f, g HA-like (f) and GABA-like (g) elements in the posterior body segments (lateral view). Abbreviations: dn – dorsal nerve, ln – lateral nerve, pn – parapodial nerve, py – pygidium, sbc – segmental bipolar cells, sn – segmental nerve, vnc – ventral nerve cord

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BMC Zoology

ISSN: 2056-3132

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