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.
(a) Brain metastasis of a melanoma lacking MGMT immunoreactivity. MGMT-immunopositive endothelial cells and leukocytes served as internal positive control (arrow). (b) Heterogeneous MGMT immunoreactivity revealing MGMT-positive tumor cells intermingled with MGMT negative tumor cells (breast carcinoma). (c) Strong nuclear reaction for MGMT in all tumor cells (lung carcinoma). Scale bar: a–c: 100 µm.
