Fig. 5From: The electroacupuncture-induced analgesic effect mediated by 5-HT1, 5-HT3 receptor and muscarinic cholinergic receptors in rat model of collagenase-induced osteoarthritisThe effects of pretreatment of muscarinic cholinergic receptor agonist (neostigmine, EA+NSTM, n = 10) and antagonist (atropine, EA+ATRP, n = 10) in the CIOA rat treated by 2Â Hz EA (EA+DMSO, n = 10) assessed by TFL (a) and PPT (b). DMSO, NSTM, and ATRP were pretreated 20Â min before 2Â Hz EA. *p < 0.05, **p < 0.01, ***p < 0.001: compared with EA+DMSOBack to article page