Figure 2.

Typical tracings obtained from two different muscle strips of the mouse gastric fundus contracted with prostaglandin F_2α (PGF, 0.3 μM). (A) shows the nitrergic relaxations to repetitive electrical field stimulation at 1 Hz (•) and the potentiating effect of 10 μM neocuproine on these relaxations. (B) shows the frequency- and concentration-dependent relaxations to electrical field stimulation (EFS, 0.5 – 4 Hz) and NO (0.3 – 30 μM, added as acidified NaNO₂) in control conditions (left panel) and in the presence of 10 μM neocuproine (right panel).