Fig. 5From: Cerium oxide and barium sulfate nanoparticle inhalation affects gene expression in alveolar epithelial cells type IIGene expression of Mmp12 in AEII cells in response to nanoparticle exposure.Gene expression of Mmp12 in AEII cells of rats exposed to 0.1, 0.3, 1.0 or 3.0 mg/m3 CeO2 or 50.0 mg/m3 BaSO4 nanoparticles for one, 28 or 90 days is illustrated. Values are expressed as mean fold regulation of clean air control ± SD; cut-off: fold regulation ≤ − 2.0 or ≥ 2.0 (dotted line), *p < 0.05, **p < 0.01, ***p < 0.001; n ≤ 5; Student’s T-test analysis of the replicate 2−∆Ct values for each gene in the control and treatment groupsBack to article page