Fig. 14
Correlation of Lpo to neutrophils and Mmp12 expression. The correlation of Lpo gene expression fold regulation (FR) values to the percentage of PMN levels in a BAL, and the FR of b Mmp12 is illustrated. Data points of the dose groups 0.1, 0.3, 1.0, and 3.0 mg/m3 CeO2 for each time point (day 1, 28, 90) are depicted. R = Spearman’s correlation coefficient, level of significance p ≤ 0.05; Spearman’s rank correlation analysis