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. Author manuscript; available in PMC: 2020 Jun 1.
Published in final edited form as: J Allergy Clin Immunol. 2019 Feb 18;143(6):2299–2302.e3. doi: 10.1016/j.jaci.2019.02.006

Figure 1. Wood smoke particle exposure induces neutrophilic airway inflammation in healthy volunteers.

Figure 1.

Healthy volunteers underwent exposure to WSP and provided induced sputum samples before exposure and 6 and 24 hours after exposure. A) All participants; B) Responders, defined by a ≥ 10 percent increase in sputum %PMNs; C) Non-Responders; D) Responders experienced a significantly greater change in sputum %PMNs from baseline at 24 hours post-WSP exposure compared to non-responders and all participants. Wilcoxon-signed rank tests were used to compare post-WSP sputum to baseline sputum (data represented as mean ± SEM; p values derived from log transformed data).