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  • Title: The background to Duovent.
    Author: Phillips VJ.
    Journal: Postgrad Med J; 1984; 60 Suppl 1():13-7. PubMed ID: 6233545.
    Abstract:
    The tone of bronchial muscle depends on the balance between the activity of the parasympathetic and sympathetic divisions of the autonomic nervous system. It is possible to produce broncho-dilatation either by stimulating the sympathetic pathway with sympathomimetic agents such as fenoterol or inhibiting the action of the parasympathetic system using anti-cholinergic agents such as ipratropium bromide.
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