Fig. 4 in Response of mucous cells of the gills of traíra (Hoplias malabaricus) and jeju (Hoplerythrinus unitaeniatus) (Teleostei: Erythrinidae)

Fig. 4. Mean values (± SEM) of mucous cell density, individual surface area and mucous cell fractional area (MCFA) at filament epithelial surface of Hoplerythrinus unitaeniatus exposed to deionized water and high ion concentration water.