
Fig. 8. Doseresponse curve for the effect of CAP2b on fluid secretion by Tenebrio molitor tubules. Data are presented as means ±1 S.E.M. for 89 tubules. The EC50 value determined was 85 nmol l1 (r2=0.79, 95 % confidence intervals 4.3 nmol l1 to 1.7 µmol l1).