Methods The expression of SP was detected with immunohistochemical technique on 15 human laryngopharynx and gastrointestine of sudden erethistic death, and 20 sudden death of heart attack as control.

• 方法应用免疫组化方法对15例过敏性猝死者咽喉和胃肠组织的P物质表达进行研究，同时以冠心病猝死者作为对照；