Fig. 6From: Cerium oxide and barium sulfate nanoparticle inhalation affects gene expression in alveolar epithelial cells type IICcl2 levels measured in bronchoalveolar lavage. Rats were exposed to clean air, 0.1, 0.3, 1.0, and 3.0 mg/m3 CeO2 nanoparticles or 50.0 mg/m3 BaSO4 nanoparticles. Ccl2 levels were determined after one, 28 and 90 days exposure and 28 and 90 days after the end of 90 days exposure (90 + 28, 90 + 90). Values are expressed as mean + SD, *p ≤ 0.05 vs. clean air control, n ≤ 5; Kruskal–Wallis–ANOVA with Mann–Whitney U-test as post hoc analysisBack to article page