Between the bronchial cartilage at the right and the bronchial lumen filled with mucus at the left is a submucosa widened by smooth muscle hypertrophy, edema, and inflammation (mainly eosinophils).

• 在右侧的支气管软骨和左侧充满粘液的支气管腔之间，平滑肌增生，水肿，炎症（主要是嗜酸性粒细胞）等因素使粘膜下层增厚。