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. 2011 Aug 29;6(8):e23864. doi: 10.1371/journal.pone.0023864

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Lundström et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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(A) Baseline normalized expression levels (Subway/Control, S/C) for immunostaining of BAL-cells revealed an intensified response in asthmatics compared to healthy individuals for COX-1 (p = 0.054). Values >1 indicate an increase in concentration following subway air exposure and values <1 indicate a decrease. (B) Analysis of the subway air and control exposures as separate groups gave significantly lower COX-1 levels in asthmatics compared to healthy individuals at baseline levels (p = 0.03).