Table 5

Results of bacterial gene point mutation assay. Cerium oxide – non-nanoparticulate. Summary of mean revertant colonies obtained
Experiment 2
Substance
 Dose Level (μg/plate)
 TA100
 TA1535
 TA102
 TA98
 TA1537




Mean ± S.D.
 Mean ± S.D.
 Mean ± S.D.
 Mean ± S.D.
 Mean ± S.D.




(-S9)
 (+S9)
 (-S9)
 (+S9)
 (-S9)
 (+S9)
 (-S9)
 (+S9)
 (-S9)
 (+S9)
DMSO
 100 μl
 93 ± 16
 105 ± 13
 27 ± 7
 9 ± 1
 345 ± 17
 374 ± 13
 20 ± 3
 27 ± 7
 8 ± 3
 13 ± 4
Cerium Oxide Non-nano
 50
 87 ± 10
 115 ± 10
 32 ± 2
 11 ± 7
 349 ± 42
 352 ± 31
 16 ± 7
 23 ± 2
 15 ± 4
 19 ± 4

150
 95 ± 4
 91 ± 8
 28 ± 7
 14 ± 2
 343 ± 20
 397 ± 21
 20 ± 3
 23 ± 2
 8 ± 4
 19 ± 5

500
 94 ± 13
 89 ± 4
 37 ± 5
 9 ± 1
 349 ± 27
 364 ± 23
 18 ± 2
 29 ± 3
 9 ± 1
 17 ± 3

1500
 82 ± 2
 99 ± 2
 33 ± 12
 9 ± 3
 351 ± 22
 380 ± 10
 17 ± 2
 28 ± 4
 8 ± 4
 21 ± 6

5000
 107 ± 2
 97 ± 13
 26 ± 4
 10 ± 2
 350 ± 49
 382 ± 21
 18 ± 4
 23 ± 6
 15 ± 5
 19 ± 3

S.D. Standard deviation

Park et al. Particle and Fibre Toxicology 2007 4:12   doi:10.1186/1743-8977-4-12