Table 1 Semi-quantitative expressions of tumor hypoxia, CD31 and VEGF in groups of mice after 14 and 28 days of HBOT.

From: Hyperbaric oxygen suppressed tumor progression through the improvement of tumor hypoxia and induction of tumor apoptosis in A549-cell-transferred lung cancer

  Control-14 (N = 10) HBO2-14 (N = 10) Control-28 (N = 10) HBO2-28 (N = 10)
Tumor hypoxia (mean ± SD) 3.40 ± 0.55 *1.25 ± 0.96 3.20 ± 0.37 *2.00 ± 0.01
CD31 (mean ± SD) 2.20 ± 0.45 *3.25 ± 0.50 2.00 ± 0.32 *2.25 ± 0.48
VEGF (mean ± SD) 1.40 ± 0.55 1.25 ± 0.50 1.20 ± 0.20 1.25 ± 0.25
1. Cell staining 0% No staining 0  
0–1% Nuclear staining in less than 1% of cells 1  
1–10% In 1–10% of cells 2  
10–50% In 10–50% of cells 3  
> 50% Greater than 50% 4  
2. Nonparametric Kruskal–Wallis test     
3. *P < 0.05, compared with Control group