Fig. 6
From: Lung carcinogenicity of inhaled multi-walled carbon nanotube in rats
Results of lung burden analysis in rats at 104 weeks. The lung burdens of 10 rats from each exposure group were measured. a Total amounts of MWNT-7 (μg) in whole lungs in male and female rats is plotted against the exposure concentration. The amount of MWNT-7 in the lungs increased linearly in a concentration-dependent manner. b The relative amount of MWNT-7 (μg/body weight) in the lungs of male and female rats. The relative amounts of MWNT-7 found in the lungs are the same in males and females