Experimental group | Exposure time(days) | Number of animals | Body weight (g) | Mean food consumption(g/day) |
---|---|---|---|---|
Values are expressed as mean (SD). | ||||
Significant differences among groups at p<0.05 (one way analysis of variance followed by post hoc pairwise multiple comparisons procedures, Tukey’s test) are indicated as follows: | ||||
*vs room air 3 days. | ||||
†vs room air 21 days. | ||||
‡vs room air 49 days. | ||||
§vs NO2 7 days. | ||||
¶vs NO2/room air. | ||||
**vs NO2 3 days. | ||||
††vs NO2 21 days. | ||||
All animals | 0 | 42 | 181 (5) | – |
Room air | 3 | 4 | 210 (3)†‡§¶ | 15.9 (2.2)**§††¶ |
Room air | 21 | 8 | 250 (13)*‡**§††¶ | 13.6 (1.2)‡**§††¶ |
Room air | 49 | 6 | 297 (13)*†**§†† | 18.6 (2.7)†**§†† |
10 ppm NO2 | 3 | 6 | 189 (9)†‡¶ | 5.8 (3.6)*†‡††¶ |
10 ppm NO2 | 7 | 6 | 183 (5)*†‡††¶ | 7 (2.8)*†‡††¶ |
10 ppm NO2 | 21 | 6 | 205 (11)†‡§¶ | 9.4 (1.8)*†‡**§ |
10 ppm NO2/room air | 21 | 6 | 201 (8)†‡¶ | 9.2 (1.9)*†‡**§ |
+ 28 | 280 (11)*†**§†† | 19.8 (2.1)*†**§ |