<qa>  What is the aim of the study?The aim of the study is to explore the contribution of pollen starch granules to the induced symptoms and airway inflammation in patients with allergic rhinitis and mild asthma in a controlled pollen exposurepollen challenge room at the Fraunhofer ITEM. Starch granules are released from the pollen grains and are considered to be the allergen carriers of the pollen. The hypothesis is proposed that pollen starch granules are important in the induction of airway inflammation and airway hyperresponsiveness. 