ALL-MED Medical Research Institute 1 article published in JoVE Immunology and Infection Symptom Assessment of Patients with Allergic Rhinitis Using an Allergen Exposure Chamber Magdalena Zemelka-Wiacek1, Anna Kosowska1,2, Marek Jutel1,2 1Department of Clinical Immunology, Wroclaw Medical University, 2ALL-MED Medical Research Institute A protocol for conducting a challenge in an allergen exposure chamber (AEC) facility is presented. AECs have proven to be safe and effective tools for the induction of allergic symptoms or as an endpoint in the efficacy testing of allergen immunotherapy due to their ability to maintain stable particle concentrations and environmental conditions.