“… carrageenan, … L‐NG nitro arginine methyl ester (L‐NAME; isoform nonselective inhibitor of NOS) or 7‐nitro indazole (7‐NI; inhibitor of neuronal NOS, nNOS) caused dose‐related … and cyclic GMP concentration in animals killed at 6 h. Administration of 7‐NI (5–25 mg kg−1, i.p.)”