Asthma and its treatments. Representation of the lungs with the bronchial tree from which 3 zooms depart. Above left, a healthy bronchiole, below, two asthmatic bronchioles. An allergen (green star) triggers the asthma attack by activating lymphocytes producing IgE (green Y) leading to the degranulation of mast cells (purple) which release leukotrienes (black beads) and cytokines (blue beads) mediating inflammation of the mucous membrane which leads to bronchoconstriction of smooth muscle fibers, hypersecretion of mucus and obstruction of the respiratory tract.

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TOP25710087

Source:

達志影像

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RM

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須由TPG 完整授權

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