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Figure 5


Fig. 5. Effects of 10 µmol l-1 dopamine (DA) on transepithelial potential differences (Vte), of posterior gills of Chasmagnathus granulatus previously perfused with the phosphodiesterase inhibitor theophylline (T), as a percentage of control values (30{per thousand} saline perfusate). Gills were perfused with 30{per thousand} saline solution plus 2.5 mmol l-1 T, then 10 µmol l-1 DA was added. After stabilization, DA was withdrawn. Finally DA was applied alone (*P<0.05; N=6).





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