Figure 7. Effect of pretreatment with capsazepine or AM281 on pulmonary C-fibre responses to anandamide.
A, afferent responses to injections of anandamide (0.4–0.6 mg kg−1) before (□), and 2 (▪) and ∼20 min (recovery; 
) after pretreatment with capsazepine (3 mg kg−1; n = 11) or vehicle (n = 7). B, afferent responses to injections of anandamide (0.4–0.6 mg kg−1) before, and 15 and 40 min after pretreatment with AM281 (0.3 mg kg−1; n = 7). *P < 0.05, compared with the corresponding control. Data of each group are means ±s.e.m. See legend to Fig. 5 for further explanation.