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Immunofluorescent staining of the fibrin expression in the tumor tissues. (a) The immunofluorescent staining of the fibrin expression in the tumor tissues (red). (b) DAPI staining of cell nuclei (blue). (c) Fusion of (a) and (b). Positive expression of fibrin was detected in U87 tumor tissues. (magnification: ×200; scale bars, 3 μm).
