Table 1.
Postnatal age-exposure (N) | MLI (μm) | Nodal density (points per mm2) | Septal thickness (μm) |
---|---|---|---|
P4-O2 (5) | 74.66 ± 1.93a | 937 ± 36a | 11.34 ± 0.68a |
P4-RA (4) | 66.62 ± 0.65 | 1160 ± 27 | 14.07 ± 0.59 |
P7-O2 (4) | 83.22 ± 2.87a | 847 ± 46a | 12.35 ± 1.0a |
P7-RA (4) | 69.96 ± 1.74 | 1230 ± 95 | 19.54 ± 0.69 |
P14-O2 (3) | 92.70 ± 3.56a | 680 ± 24a | 9.67 ± 0.14a |
P14-RA (4) | 61.75 ± 1.57 | 1720 ± 118 | 16.21 ± 1.10 |
P28-O2(P0–P4) (3) | 56.82 ± 0.62a | 1861 ± 74a | 12.02 ± 0.96a |
P28-RA (4) | 51.01 ± 0.52 | 2103 ± 44.53 | 14.98 ± 0.35 |
Values are means ± SEM.
Significant differences analyzed by Student–s t test (p < 0.05 vs. RA at equivalent postnatal ages).
MLI, mean linear intercept; O2, 85% hyperoxia; RA, room-air.