From: Comparative carcinogenicity study of a thick, straight-type and a thin, tangled-type multi-walled carbon nanotube administered by intra-tracheal instillation in the rat
MWCNT-A
MWCNT-B
0.5 mg
1.0 mg
52 wks
44.9 ± 6.2
94.6 ± 24.5
170.8 ± 86.3
344.3 ± 51.7
104 wks
41.6 ± 8.4
93.1 ± 17.0
135.0 ± 19.7
342.6 ± 96.9