Fig. 8From: Effects from a 90-day inhalation toxicity study with cerium oxide and barium sulfate nanoparticles in ratsSpecific BaSO4 nanoparticle related histopathological findings. All examples illustrate findings after 50.0 mg/m3 BaSO4 inhalation. a alveolar tissue with (particle-laden) macrophages (arrow), H&E, 37×, b mucous cell hyperplasia of the respiratory epithelium in the nasal cavity (arrow), H&E, 40× c nasal cavity respiratory epithelia with cytoplasmic eosinophilic globules (arrows), H&E, 40×Back to article page