From: Assessment of the toxicity and carcinogenicity of double-walled carbon nanotubes in the rat lung after intratracheal instillation: a two-year study
Untreated
Vehicle
DWCNT
0.125Â mg/rat
0.250Â mg/rat
0.500Â mg/rat
MWCNT
Number of rats examined
5
7
6
Bronchiolo-alveolar Hyperplasia (BAH)
0
2
5*,#
1
Pleural Mesothelioma