title: Allergens and irritants.
abstract: The range of diseases caused by respiratory allergens and irritants is wide because they trigger different pathophysiological mechanisms. Surprisingly, though smoking promotes asthma it exerts the opposite effect on the development of extrinsic allergic alveolitis.
authors.forename: A N
authors.initials: AN
authors.lastname: Taylor
mesh_terms: D000393:Air Pollutants / Q000009:adverse effects*; D000542:Alveolitis, Extrinsic Allergic / Q000209:etiology* / Q000276:immunology; D000818:Animals; D001249:Asthma / Q000209:etiology* / Q000276:immunology; D001716:Bird Fancier's Lung / Q000209:etiology; D006801:Humans; D014028:Tobacco Smoke Pollution / Q000009:adverse effects
chemical_list: D000393:Air Pollutants; D014028:Tobacco Smoke Pollution