Click on image to view larger version.

Fig. 6. Transmission electron micrograph (A,B) and immuno-gold localisation of
AQP-3 (CE) in chloride cells of the branchial epithelium of seawater
(SW)-acclimated silver eels. (E) Control section incubated with pre-immune
serum. CC, chloride cell; AM, apical membrane; AP, apical pit; M,
mitochondria; N, nucleus; PC, pavement cell; TS, tubular system; V, vacuole;
VTS, vesiculo-tubular system; A, accessory cell; SA, sub-apical region; GP,
gold particles (15 nm). Bars, 1 µm.