Interleukin-18 induces mechanical hypernociception in rats via endothelin acting on 'ET IND b' receptors in a morphine sensitive manner - Verri Júnior, Waldiceu Aparecido; Schivo, Ieda Regina dos Santos; Cunha, Thiago M.; Liew, Foo Y.; Cunha, Fernando de Queiroz; Ferreira, Sérgio Henrique (The journal of pharmacology and experimental therapeutics, 2004)