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. 2008 Jun 20;116(11):1500–1508. doi: 10.1289/ehp.11229

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Effect of Baltimore PM on total BAL leukocyte counts. (A) Total white blood cells (WBCs). (B) Macrophages. (C) Neutrophils (polymorphonuclear cells; PMNs). (D) Eosinophils. Values shown are mean ± SE; n = 5–6.

*Significant increase over PBS/PBS control for each time point (p < 0.05). ^#Significant increase over PBS/OVA group for each time point (p < 0.05). S, synergistic effect between PM and OVA treatment (SI > 1).