Methods: Bronchus rings of 2-4 mm in diameter were obtained from 12 patients undergoing lobectomy. Passive sensitization of human bronchi was induced with the serum containing high level of IgE to house dust mite. 方法:内径2~4mm的支气管来源于12例接受肺叶切除手术的病人,用高效价的抗屋尘螨-IgE血浆致敏支气管。