Figure 3.

Radiation increases 3-nitrotyrosine (3-NT) immunostaining in vestibular schwannomas (VSs). Sections of VSs were immunostained with an antibody that detects 3-NT. For four VSs (A-D) sections were derived from the initial tumor resection and from the recurrent tumor that had previously been irradiated. For two VSs (E,F) sections were derived from the initial tumor resection and from the recurrent tumor that had not previously been irradiated. Representative hematoxylin and eosin (H&E) stains are shown for each tumor. Scale bar=100 μm.