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Role of innate immunity in response to environmental triggers of asthma. A schematic diagram of the relationship of respiratory virus infection and aeroallergen exposures on activation of the innate mucosal response and relationship of downstream events, including clinical (acute) exacerbation of disease, remodeling, and chronic alterations in lung function. Abbreviations are AHR, airway hyperreactivity; RV, rhinovirus; RSV, respiratory syncytial virus.
