Fig. 1

Morphology of the nervous system of adult female Dinophilus gyrociliatus. Light microscopic images of the adult female (a) and a detail of the head (b), which was subsequently used to create the template to map the gene expression patterns on c. d–g Details of the brain visualized by immunohistochemical labeling and confocal laser scanning microscopy of the direct labeling of DNA in the nuclei with DAPI (d), and the indirect labeling of acetylated α-tubulin-like immunoreactivity (e), FMRFamide-like immunoreactivity (f) and serotonin-like immunoreactivity (g). br brain, cb1–8 ciliary bands 1–8, drcc dorsal root of the circumesophageal connective, egg eggs, ey eye, fpk perikarya with FMRFamide-like immunoreactivity, mo mouth opening, no nuchal organ, np neuropil, pcc prostomial compound cilia, phb pharyngeal bulb, pyg pygidium, spk perikarya with serotonin-like immunoreactivity, stnr stomatogastric nerve ring, sto stomach, vrcc ventral root of the circumesophageal connective