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Astrocytes accumulate around metastasized lung cancer cells in human brain. a Hematoxylin and eosin (H & E)-staining of lung cancer cell metastasis (dark color) in the human brain section. b Immunostaining of astrocytes and tumor cells from human brain section. GFAP-positive astrocytes aggregated around cancer cells (CAM5.2), which looked similar to the brain metastasis of model mice
