Fig. 2From: Dexmedetomidine’s inhibitory effects on acetylcholine release from cholinergic nerves in guinea pig trachea: a mechanism that accounts for its clinical benefit during airway irritationEffect of dexmedetomidine (a), remifentanil (b), lidocaine (c) and tetrodotoxin (d) on acetylcholine (Ach) release from guinea pig tracheal rings in response to cholinergic EFS. Data were normalized to an initial measurement of Ach release obtained before addition of drugs. Mean ± SEM (n = 7). *p < 0.05, **p < 0.01 significant difference from controlBack to article page