Fluorescence microscopy and
mRNA hybridization. (A) Coronal brain section of GL-26 tumor-bearing mouse visualized after Nissl staining. (B) A coronal brain section of another mouse visualized under fluorescence microscopy depicting the EGFP-expressing GL26 cells. (C) Result of in situ TSPO mRNA hybridization performed on an adjacent brain section (box depicts part of the slice in a greater magnification).