Table 3.
Ammonia concentration (ppm; mean ± 1 SD) in PIV (n= 19) and FT (n= 10) cages each containing 2 mice
| Day | PIV | FT | Holding room |
| 1 | 0.90 ± 0.39 | 2.00 ± 1.10 | 0 |
| 2 | 0.40 ± 0.66 | 2.33 ± 1.63 | 1.00 |
| 3 | 1.40 ± 1.43 | 4.00 ± 1.79 | 3.00 |
| 4 | 4.20 ± 4.05 | 24.67 ± 24.06 | 10.00 |
| 5 | 17.80 ± 12.66 | 50.00 ± 35.78 | 12.00 |
| 6 | 31.40 ± 12.94 | 78.33 ± 44.46a | 4.00 |
| 7 | 34.40 ± 15.85 | 103.33 ± 57.50a | 3.00 |
PIV data are net values (concentrations measured in PIV cages minus background ammonia concentration in the holding room).
a
Significant (P < 0.05, Mann–Whitney test) between PIV and FT groups.