Source:http://linkedlifedata.com/resource/umls/id/C0013973
MSH: Agents that cause vomiting. They may act directly on the gastrointestinal tract, bringing about emesis through local irritant effects, or indirectly, through their effects on the chemoreceptor trigger zone in the postremal area near the medulla.,CSP: class of agents that cause vomiting; may act directly on the gastrointestinal tract, bringing about emesis through local irritant effects, or indirectly, through their effects on the chemoreceptor trigger zone in the postremal area near the medulla.,NCI: Describes a substance that causes vomiting.