3. Rebuilding the trachea (airway remodelling) on chronic inflammation is caused by the transition of the trachea, bronchial wall will be replaced by a new type of membrane tissue. (Fibrosis) muscles and glands, pharynx thickened mucus (mucous glang) increasing. Cells that are vital to the rebuilding of bronchial cells lining the trachea (epithelial cells) are the substances which cause fibrosis and rebuilding the walls of the pharynx. It also secretes cytokines stimulate the cells that cause inflammation in the body, including bronchial wall constantly. And live longer Causing inflammation of the trachea is not terminated simple cells can cause the inflammation and rebuilding more important is the eosinophils secrete substances to stimulate the rebuilding and together with the membrane.