Immunohistochemical marker expression in lung macrophages (in %)
| Marker | Group | n | 0 | 1+ | 2++ | 3+++ |
| TNF-α | FF | 40 | 19.4 | 22.6 | 29.0 | 29.0 |
| PMB | 13 | 15.4 | 15.4 | 53.8 | 15.4 | |
| HS | 30 | 22.5 | 25.0 | 17.5 | 35.0 | |
| RS | 5 | 40.0 | 20.0 | 40.0 | 0.0 | |
| IL-8 | FF | 40 | 85.0 | 15.0 | 0.0 | 0.0 |
| PMB | 13 | 92.3 | 7.7 | 0.0 | 0.0 | |
| HS | 30 | 93.5 | 6.5 | 0.0 | 0.0 | |
| RS | 5 | 100.0 | 0.0 | 0.0 | 0.0 | |
| ICAM-1 | FF | 40 | 97.5 | 2.5 | 0.0 | 0.0 |
| PMB | 13 | 84.6 | 15.4 | 0.0 | 0.0 | |
| HS | 30 | 93.5 | 6.5 | 0.0 | 0.0 | |
| RS | 5 | 100.0 | 0.0 | 0.0 | 0.0 | |
Staining intensity: 0 negative, 1+ mild, 2++ moderate, 3+++ strong.
TNF-α, tumour necrosis factor α; IL-8, interleukin-8; ICAM-1, inter-cellular adhesion molecule 1; FF, fire fatalities; PMB, postmortem burns; HS, haemorrhagic shock; RS, railway suicides.