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Figure 4


Fig. 4. The cGMP-analogue 8-bromo-cGMP reduces K+-induced contractures and the proctolin-induced increase. Summary of independent experiments showing the maximum amplitude of contractures normalised to the controls: in the presence of 1 µmol l-1 proctolin (N=8), in the presence of proctolin and 20 nmol l-1 8-bromo-cGMP (N=8) and in the presence of the cGMP analogue (N=8) during high K+-saline application for 5 min. *Significantly different from controls, P<0.05.