Participants
PDDE
THORACIC
In a randomized, cross-over, controlled human exposure study (ClinicalTrial.gov Identifier: NCT02017431), 13 allergen-sensitized participants were recruited and exposed to four co-exposure conditions (Fig. 
Randomized, double-blinded crossover study design. 13 participants participated in four exposure conditions. Sample collection and spirometry were performed prior to a 2-hour exposure to FA, DE, or PDDE as well as before and for 48 h after 2 min of inhaled saline or allergen challenge. Airway responsiveness (meth PCReprinted with permission of the American Thoracic Society. Copyright © 2022 American Thoracic Society. All rights reserved. Wooding et al. 2019, Particle Depletion Does Not Remediate Acute Effects of Traffic-related Air Pollution and Allergen. A Randomized, Double-Blind Crossover Study. 
Participant characteristics2 Asian,11 Caucasian*Definitions of abbreviations: HDM = house dust mite (Adapted with permission of the American Thoracic Society. Copyright © 2022 American Thoracic Society. All rights reserved. Wooding et al. 2019, Particle Depletion Does Not Remediate Acute Effects of Traffic-related Air Pollution and Allergen. A Randomized, Double-Blind Crossover Study. Am J Respir Crit Care Med. 200:565–574. The American Journal of Respiratory and Critical Care Medicine is an official journal of the American Thoracic Society. Readers are encouraged to read the entire article for the correct context at [