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Mast cell densities in different lung tissue specimens
| Specimen type | Mast cells per square millimeter, mean ± SD |
|---|---|
| Surgical lung biopsy | |
| UIP (N = 44) | 321 ± 104 |
| UIP with DAD (N = 3) | 267 ± 149 |
| Preserved alveolar areas in subjects with UIP (N = 32) | 71 ± 50 |
| Autopsy lung tissue specimen | |
| UIP with DAD (N = 7) | 124 ± 102 |
| Normal control (N = 12) | 54 ± 17 |
DAD diffuse alveolar damage, SD standard deviation, UIP usual interstitial pneumonia
