尽管对变态反应过程中肥大细胞的作用机理仍存在分歧，但其作用的重要性已为人们所接受。一般认为肥大细胞在变态反应过程中首先发生的变化是细胞脱颗粒，随后颗粒内物质如组胺等便立即被释放。在人类肥大细胞脱颗粒后便留下一个空泡。含有内容物的肥大细胞颗粒在电子显微镜下 Although there are still differences in the mechanism of action of mast cells during allergy, the importance of its role has been accepted by people. It is generally believed that the first change in mast cells during allergy is the degranulation of the cells, followed by the immediate release of intragranular substances such as histamine. After the human mast cells degranulation will leave a vacuole. Mast cell particles containing the contents under electron microscopy