Inhaled birch pollen extract induces airway hyperresponsiveness via oxidative stress but independently of pollen-intrinsic NADPH oxidase activity, or the TLR4-TRIF pathway.
Shalaby KH, Allard-Coutu A, O'Sullivan MJ, Nakada E, Qureshi ST, Day BJ, Martin JG. Inhaled birch pollen extract induces airway hyperresponsiveness via oxidative stress but independently of pollen-intrinsic NADPH oxidase activity, or the TLR4-TRIF pathway. J Immunol. 2013 Jul 15; 191(2):922-33.