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Effects of L-NAME (NG-nitro-L-arginine methyl ester, 10−4 mol l−1), ODQ (1-H-[1,2,4] oxadiazolo [4,3-a] quinoxalin-1-one, 10−4 mol l−1) and removal of endothelium on chuanxiongzine-induced relaxation of isolated corpus cavernosum strips precontracted with phenylephrine (10−5 mol l−1). Symbols are mean±s.e.m. *P<0.05, when compared with L-NAME and removal of endothelium.
