Fig. 2From: Effects from a 90-day inhalation toxicity study with cerium oxide and barium sulfate nanoparticles in ratsMeasured vs. predicted lung burden. Ce and Ba contents were measured in explanted lungs of rats exposed to 0.1, 0.3, 1.0 or 3.0 mg/m3 CeO2 or 50.0 mg/m3 BaSO4 nanoparticles for up to 90 days. Predicted values (half colored symbols) were based on deposition fractions calculated via the MPPD model and expected first order elimination with half-times of 70 days (0.1–1.0 mg/m3) or 200 days (3.0 and 50.0 mg/m3)Back to article page