Fig. 2

Significant differences of COX2 expression were observed for gender (a), age at the cut off 56.19 years (b), prior radiotherapy (c), NF2 (d), tumor expansion according to the Hannover grading scale (e and f) and expression of the proliferation marker MIB1 at the cut off 1.03% (g). Outliers are represented as single dots and were included in each analysis and respective p-values are shown at the top of each graph