TABLE 2.
SURFACE TO VOLUME RATIO VALUES (μM−1) IN MICE OF 15 AND 90 d OF AGE IN THE DIFFERENT EXPOSURE PROTOCOLS
| Age (d) | Study Group | Surface-Volume Ratio (μm−1) |
|---|---|---|
| 15* | Nonexposed (n = 13) | 0.09 ± 0.01 |
| 15 | Prenatal (n = 11) | 0.10 ± 0.01 |
| 15 | Postnatal (n = 8) | 0.09 ± 0.01 |
| 15 | Pre + Postnatal (n = 10) | 0.08 ± 0.01† |
| 90 | Nonexposed (n = 11) | 0.06 ± 0.01 |
| 90 | Prenatal (n = 9) | 0.05 ± 0.01 |
| 90 | Postnatal (n = 7) | 0.05 ± 0.01 |
| 90 | Pre + Postnatal (n = 8) | 0.05 ± 0.01† |
Data are presented as mean ± SD. Statistical significance was achieved for age (*15 > 90, P < 0.001) and exposure to PM2.5 during pre + postnatal development († P = 0.036).