Abstract
BACKGROUND: Postoperative ileus (POI) remains an important cause of death in horses. The recently developed selective 5-HT4 receptor agonists such as prucalopride target 5-HT4 receptors on myenteric cholinergic neurons to enhance acetylcholine release and GI motility. No clearcut in vitro evaluation whether highly selective 5-HT4 receptor agonists enhance submaximal cholinergic
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