Fig. 3
From: No inflammatory effects after acute inhalation of barium sulfate particles in human volunteers
Chemotaxis (migrated cells) of the unexposed dHL-60 cells in response to NR8383 cell supernatants obtained from incubations with increasing compound concentrations. For comparison data of the ZnO, induced chemotaxis are shown. Commercially available silica (SiO2) nanoparticles were used as positive control that allows comparison with historical data. Results represent fitted dose–response models for the numbers of in vitro migrated cells after treatment with ZnO and BaSO4. Results represent arithmetic means and standard deviations of three independent experiments