迄今所知,在咽鼓管功能正常条件下,正常中耳粘膜中缺乏引起免疫反应的成份,诸如:淋巴细胞、浆细胞和巨噬细胞,甚至中性白细胞。中耳炎发生免疫反应必有一个生理学上和细菌学上的异常过程。咽鼓管的阻塞造成了中耳负压,随之产生渗液,但在无菌条件下,这种渗液是浆液性的,中耳粘膜的杯状细胞和腺 So far, under the normal eustachian tube function, the normal middle ear mucosa lacks ingredients that cause an immune response, such as lymphocytes, plasma cells and macrophages, and even neutrophils. There is a physiological and bacteriological abnormality in the immune response to otitis media. Eustachian tube obstruction caused by negative pressure in the middle ear, followed by the generation of exudate, but under sterile conditions, this exudate is serous, middle ear mucosa goblet cells and glands