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Markers of cardiopulmonary inflammation (neutrophils and macrophages), antioxidant response (total antioxidant status), and myocardial stretch (BNP) at 1 d post-exposure to PM or filtered air in saline- or ISO-pretreated rats. Means ± standard error, n = 4-5 / group. Stars and brackets represent significant differences between groups (P < 0.05). Omega indicates a significant overall effect of ISO on BNP as detected by two-way ANOVA (P=0.01).
