RAD51 and non-small cell lung carcinoma: According to the criteria scoring RAD51 expression into four grades depending on the intensity and percentage of its staining in NSCLC cells (Figure 8A), the statistical data from Pearson Chi-square tests showed that the expression of RAD51 was dramatically overexpressed in the T tissues (54.2% for +++), in comparison with N tissues (only 19.2% for +++) (Figure 8B).