1·The functions of the secretory barrier of the tracheobronchial tree are physical, chemical, immunological , and biological.
气管支气管树分泌屏障的功能有物理的、 化学的、 免疫学的和生物学的。
2·The functions of the secretory barrier of the tracheobronchial tree are physical, chemical, immunological, and biological.
气管支气管树分泌屏障的功能有物理的、化学的、免疫学的和生物学的。
3·Purpose: To study the CT features of tracheobronchial tuberculosis and to evaluate the diagnostic capability of CT.
目的：分析气管支气管结核病人的CT表现和特征，探讨CT诊断该病的可靠性。
4·Conclusion The fiberoptic bronchoscopy has important diagnostic value for tracheobronchial tuberculosis.
结论纤支镜检查对气管支气管结核有重要诊断价值。