Figure 10
Embryonic development of the serotonergic nervous system in Maritigrella crozieri. (A) 111 hours post-oviposition (hpo) - ventral view, (B) 125 hpo - ventral view, (C) 139 hpo - i) ventral view, ii) left lateral view, (D) 175 hpo - ventral view. (ar) apical ring, (cb) ciliary band, (cc) cerebral commissure, (ccb) commissural cell bodies, (ce) cerebral eye, (cp) caudal perikaryon, (dlc) dorso-lateral connective, (ee) epidermal eye, (mn) medial nerve, (phnr) pharyngeal nerve ring, (rc) ring commissures, (st) stomodaeum, (vlc) ventro-lateral connective, (vp) ventral perikarya.