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Figure 3


Fig. 3. Effect of DA on posterior gills previously stimulated with the adenylyl cyclase activator forskolin (10 µmol l-1); mean was calculated 40-60 min after the beginning of the experiment. Perfusion with 10 µmol l-1 DA did not produce consistent effects; 50 µmol l-1 partially reversed the stimulating effect of forskolin on Vte (P<0.05; N=7, mean was obtained 80-100 min after the beginning of the experiment). Dotted line represents mean control value obtained after 20 min of perfusion with 30{per thousand} saline. Asterisk, significantly different from -DA values.





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