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Immunohistochemical (IHC) detection of luciferase in liver metastases. Animals inoculated with D538G-Luc or Y537S-Luc cells were treated with vehicle and liver tissue was harvested at 6 weeks. Tissue sections were stained with antibodies to luciferase to visualize the human breast cancer cells in the host animal liver. Scale bar is 100 μm.
