2.选择性IgG亚类缺陷血清1～2种IgG亚类浓度低于同龄儿童2个标准差时可考虑IgG亚类缺陷。
O O B-dis I-dis I-dis I-dis I-dis I-dis I-dis I-dis I-dis I-dis B-bod I-bod O O O O B-bod I-bod I-bod I-bod I-bod O O O O O O O O O O O O O O O O O B-dis I-dis I-dis I-dis I-dis I-dis I-dis O