Fig. 2From: Slow lung clearance and limited translocation of four sizes of inhaled iridium nanoparticlesAverage whole-body iridium-192 content for 10Â nm, 15Â nm, 35Â nm, and 75Â nm aerosols: (a) normalised to whole body content at 0Â h and (b) normalised to whole body content at 8 d, with theoretical plots for retention half-times of 100Â days (dotted line) and 500Â days (dashed line)Back to article page