Comparisons of specific and nonspecific bronchoprovocation in subjects with asthma, rhinitis, and healthy subjects

We studied subjects with atopic asthma, atopic rhinitis, and nonatopic healthy subjects to evaluate responsiveness to bronchoprovocation with both methacholine and allergen. Subjects with a demonstrable FEV1 PD20 to methacholine or allergen (responders) were further analyzed for putative sensitivity...

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