An interaction among histaminergic and opioidergic programs within the CNS was advised virtually thirty years ago, by means of an observation that morphine administration resulted in the release of histamine and its enhanced turnover in the periaqueductal grey (Nishibori, Oishi, Itoh, & Saeki, 1985), suggesting that analgesia produced by https://fidelr727kbr3.aboutyoublog.com/profile