| PAP | Pneumonia | Chronic bronchitis | Sarcoidosis |
Alveolar macrophages (points) | 3.35±0.45 | 1.4±0.68 | 2.2±0.72 | 2.1±0.47 |
Floating intraalveolar substances (points) | 4.1±0.9 | 1.2±0.4 | 0 | 0 |
Thickness of elastic fibers (µm) | 9.2±3.3 | 11.8±3.2 | 9.4±4.8 | 10.7±3.95 |
Diameter of microvessels (µm) | 86.5±32.5 | 104±36.2 | 93.4±43.7 | 89.9±50.7 |