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Conventional H&E staining of: (top) GL261 tumor growing in non-irradiated mouse brain (C57BL/6); (bottom) mixed model, with tumor growing within a region of radiation necrosis. Scale bars on the whole-mount images (left) represent a length of 1 mm; the expanded images (right) are at a magnification factor of 10×. Black arrows indicate areas of hemorrhage and necrosis (bottom, left) and vasculopathic changes (bottom, right).
