“2 Six … injection of carrageenan (1–3% w/v) hindpaw constitutive (i.e. calcium‐dependent) nitric oxide synthase (cNOS) activity (determined ex vivo as … radiolabelled L‐arginine to radiolabelled citrulline) was increased (e.g. 2% w/v; 0.64±0.08 pmol citrulline mg−1 protein 15 min−….f.”