Fig. 6. The effect of PACAP 27 (10-7 mol l-1, N=8),
VIP (10-7 and 10-6 mol l-1, N=6) and
GABA (10-6-10-4 mol l-1, N=6) on the
circular smooth muscles of the cardiac stomach of Xenopus laevis.
PACAP 27, VIP and GABA reduced the mean force developed by the stomach. The
results are presented as mean force developed (± S.E.M.) above resting
level. Open bars represent values immediately before addition of drug.
*P
0.05 compared to the control (C).