Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Imunohistochemistry and Chromogenic In Situ Hybridization (CISH) analysis of the three lesions. COX2 immunohistochemistry (×200) positive for the meningioma lesion and negative for the primary and recurrent gliosarcoma. MGMT staining (×200) was only positive for the meningioma. EGFR immunostaining was negative in primary gliosarcoma and meningioma, with recurrent gliosarcoma exhibiting strong positivity. CISH analysis of EGFR confirmed these findings after EGFR amplification
