Fig. 5. Comparison of the effects of the peptides on the nerve-evoked and the ACh-induced contractions. (A) 10^–7 mol l^–1 ENpa, (B) 10^–7 mol l^–1 GSPRFFamide, (C) 10^–8 mol l^–1 NdWFamide. Upper, middle and lower lines of the box plots show 75th percentile, median and 25th percentile, respectively. Upper and lower bars show the largest and smallest values. Numbers of preparations are shown in parentheses. Statistical significance was assessed either by Mann-Witney U-test (A,C) or Student's t-test (B).