Copyright information:Taken from "Induction of Proinflammatory Cytokines and C-Reactive Protein in Human Macrophage Cell Line U937 Exposed to Air Pollution Particulates"Environmental Health Perspectives 2005;113(11):1536-1541.Published online 21 Jul 2005PMCID:PMC1310915.This is an Open Access article: verbatim copying and redistribution of this article are permitted in all media for any purpose, provided this notice is preserved along with the article's original DOI.