Promotion of lung adenocarcinoma following inhalation exposure to multi-walled carbon nanotubes

Table 2 Incidence and multiplicity of lung tumors in B6C3F1 mice 17 months following exposure to Mitsui-7 MWCNT

Treatment	Total number of mice	Percent of animals with tumors	Total number of lung tumors	Lung tumors/total number of animals	Number of adenocarcinomas/group
AIR	56	23.2	17	0.25 ±0.166	7
MCA	54	51.9*	41*	0.81 ±0.167	14*
MWCNT	49	26.5	20	0.38 ±0.185	7
MCA + MWCNT	42	90.5*	133*	2.9 ±0.386*	56*

*Indicates statistical significance at p < .0001 ± indicates standard deviation.

ISSN: 1743-8977