TABLE 2.
MORPHOMETRIC ANALYSIS OF ALVEOLAR STRUCTURE
| Control | Estradiol | |
|---|---|---|
| Lung volume, cm3 | 6.6 ± 0.6 | 7.5 ± 0.7 |
| Mean length of primary septa, μm | 11.2 ± 0.5 | 13.3 ± 0.6 |
| Number of branch points, n/mm2 | 1232 ± 115 | 865 ± 107 |
| Surface density of primary septa, cm2/cm3 | 269 ± 17 | 865 ± 107 |
| Total surface area of primary septa, cm2 | 1736 ± 127 | 1645 ± 194 |
| Mean length of end segments, μm | 6.7 ± 0.2 | 7.0 ± 0.2 |
| Number of end segments, n/mm2 | 200 ± 17 | 198 ± 13 |
| Surface density of end segments, cm2/cm3 | 26.3 ± 1.8 | 27.5 ± 1.3 |
| Total surface area of end segments, cm2 | 170 ± 13 | 206 ± 18 |
| End segment/internodal segment, n/mm | 15.0 ± 1.2 | 18.3 ± 1.1 |
| Length ratio of internodal/end segment, mm | 10.5 ± 0.9 | 8.0 ± 0.5 |
| Total alveolar surface area, cm2 | 1905 ± 132 | 1851 ± 208 |