Figure 2
From: Invertebrate neurophylogeny: suggested terms and definitions for a neuroanatomical glossary
Apical organ of the creeping-type larva of the entoproct Loxosomella murmanica. A. Eight bipolar peripheral cells are arranged around eight central flask-shaped receptor cells which are underlain by a central neuropil. [Schematic drawing based on serotonin-like immunoreactivity.] B. Flask-shaped receptor cell, situated just below the apical ciliary tuft, and peripheral cell with two emerging neurites. [Confocal laser scanning micrograph showing serotonin-like immunoreactivity.] Abbreviations: at = apical ciliary tuft; fc = flask-shaped receptor cell; np = neuropil; pec = peripheral cell. Originals: A. Wanninger.