Immune complexes(IC)and antinuclear antibodies(ANA)in middle ear effusions from 40cases(45 ears)of secretory otitis media were measured using PEG precipitation method and fluorescentmicoscopy.

• 40例（45耳）中耳积液分别用聚乙二醇沉淀法测免疫复合物（IC）和荧光显微镜法检测抗核抗体（ANA）。