Table 2 Incidence and average size of lung nodules of the left lung lobe in mice
Group | Treatment NNK or saline +  diet | n | Average body weight (g) at 30 wks | % of mice with nodules | No. of nodules per mouse | Average size of nodules (mm) |
|---|---|---|---|---|---|---|
Exp. 1 | ||||||
 I | NNK ip +  water | 15 | 25.7 ±  1.83 | 93.3 | 2.13 ±  1.19 | 1.29 ±  0.25 |
 II | NNK ip +  GB | 15 | 23.4  ± 1.59 | 66.7 | 0.93  ± 0.80* | 1.14  ± 0.08** |
 III | NNK ip + Beer | 15 | 26.0 ±  2.68 | 46.7 | 0.73 ±  0.88* | 1.19 ±  0.18 |
 IV | saline ip +  water | 12 | 24.2  ± 4.09 | 0 | 0 | 0 |
 V | saline ip +  GB | 10 | 23.8 ±  2.63 | 0 | 0 | 0 |
 VI | saline ip +  Beer | 10 | 28.1  ± 2.60 | 0 | 0 | 0 |
Exp. 2 | ||||||
 VII | NNK ip +  water | 15 | 25.3 ±  3.96 | 100 | 5.47 ±  1.60 | 1.44 ±  0.32 |
 VIII | NNK ip +  NAB (A) | 15 | 26.7  ± 3.40 | 86.7 | 3.00 ±  2.36# | 1.42  ± 0.28 |
 IX | NNK ip +  NAB (B) | 15 | 26.4 ±  2.44 | 80.0 | 1.67  ± 1.40# | 1.41 ±  0.27 |
 X | saline ip +  water | 10 | 32.4  ± 3.12 | 0 | 0 | 0 |
 XI | saline ip +  NAB (A) | 10 | 31.7 ±  2.81 | 0 | 0 | 0 |
 XII | saline ip +  NAB (B) | 10 | 31.3  ± 1.62 | 0 | 0 | 0 |