对29流行性出血热患者真皮的小血管及肥大细胞脱粒现象进行了光镜和电镜观察。发现①小血管有炎细胞浸润,内皮细胞基莫分层,甚至内皮细胞坏死。②真皮肥大细胞脱粒现象比正常人明显。既表现有细胞溶解性脱粒,又表现有非溶解性脱粒,有些肥大细胞呈环死象征。 Thirty-nine patients with epidemic hemorrhagic fever dermal small blood vessels and mast cell degranulation were observed by light microscopy and electron microscopy. Found that ① small blood vessels have infiltration of inflammatory cells, endothelial cells Kemo layered, and even endothelial cell necrosis. ② dermal mast cell degranulation was significantly more than normal. Both performance of cell degranulation, but also showed non-lytic threshing, and some mast cells were ring dead symbol.