Figure 4. OEH I immunostaining in the nervous system of adults: A-C, 3 day old female Aedes aegypti. A. Clusters of immunostained MNCs (arrowhead) and their axons form a chiasma (arrowheads) and arch in the brain (BR), exit in the nervi corpris cadiaci (NCC), and pass over the pharyngeal pump (PP) to the corpus cardiacum (CC). In the CC, immunostained varicosities (arrows) occur along these axons, which exit in the esophageal nerves. Dorsal to ventral of whole brain; anterior, top. B. A pair of immunostained cells (arrowheads) in the subesophageal ganglion. C. Immunostained cells (arrowheads) in the fused thoracic ganglia. D. Immunostained MNCs (arrowheads) and a lateral cell (arrowhead) in the brain of a four day old male Anopheles gambiae. E. Immunostained cells (arrowheads) and axons (arrows) in the brain and optic lobes (OL) of a seven day old An. gambiae female. Top or right of figure, anterior or dorsal. Scale bar = 40 µm for A-E.