Figure 3
From: Application of short-term inhalation studies to assess the inhalation toxicity of nanomaterials

Comparison of changes in BALF. A: coated nano-TiO2. B: micron-scale ZnO; C: coated nano-ZnO; D: SiO2.naked; E: nano-CeO2; F: Al-doped nano-CeO2. Changes are shown as x-fold differences compared to the corresponding control values using a logarithmic scaling.