Arai T, et al. - In order to gain a better understanding of allergic rhinitis (AR) diagnosis, researchers looked for differences among patients with AR, subjects with asymptomatic sensitization (AS), and subjects without sensitization (NS). Findings revealed that allergen stimulation specifically upregulated thymic stromal lymphopoietin receptor (TSLPR) expression on basophils, which might be useful for the identification of the causative allergen in patients with AR.