Allergy. 1993 Feb Grønborg H1, Bisgaard H, Rømeling F, Mygind N. Abstract We challenged 30 pollen-sensitive volunteers with allergen, recorded symptoms and signs over a 10-h period, and rechallenged them after 24 h, in order to characterize the early and late allergic symptom response in the nose. The challenge was performed after topical pretreatment withRead more