Figure 3
The effect of substances on rat middle meningeal arteries precontracted with PGF 2α . The relaxation induced in rat meningeal arteries pre-contracted with PGF2α at increasing concentrations of each of the tested substances (A-E) and NaCl buffer (F). Values are given as mean ± SEM (n = 3 – 5), where PGF2α precontraction is set to be 100%.