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Figure 1 | Particle and Fibre Toxicology

Figure 1

From: Antioxidant airway responses following experimental exposure to wood smoke in man

Figure 1

Intensity of recorded symptoms. The intensity of the prominent symptoms (unpleasant smell, throat and nasal irritation) observed in subjects exposed to wood smoke (gray box plots) and filtered air. Intensity scores are presented as median values (central line) with the inter-quartile range (box) and 95th percentiles (whiskers). The number of subject exhibiting symptoms is recorded for each of the symptoms, together with the level of significance determined using the Kruskal-Wallis test.

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