Localization, release and bioavailability of pollen allergens: the influence of environmental factors

Allergens are integral constituents of plants or animals and their normal functions and localization are being characterized. To trigger responses in humans, allergens must become bioavailable and the role of air pollutants — for example diesel-exhaust particles — in this process is causing concern. Finally, the fact that some pollen releases eicosanoid-like proinflammatory mediators may have wide implications.