Table 1 Incidence of focal adenomatous hyperplasia, macrophage infiltration and foreign material in the lung by light microscopy
From: Promotion of lung adenocarcinoma following inhalation exposure to multi-walled carbon nanotubes
Focal alveolar adenomatous hyperplasia, macrophage infiltration and foreign material observed in MWCNT–treated mice 17 months following exposure | ||||
|---|---|---|---|---|
| Â | Air | MCA | MWCNT | MCA + MWCNT |
Number of animals/group | 56 | 54 | 49 | 42 |
Number animals with positive foreign material | 0 | 0 | 49* | 42* |
Macrophage infiltration | 3 | 9 | 32* | 39* |
Number animals with positive for focal adenomatous alveolar hyperpasia | 7 | 8 | 14* | 26* |