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Fig. 2 | BMC Cancer

Fig. 2

From: Clinical and pathological significance of ROS1 expression in intrahepatic cholangiocarcinoma

Fig. 2

​Immunohistochemical staining for ROS1. Tumor sections were stained for ROS1 with rabbit monoclonal antibody (D4D6), purchased from Cell Signaling Technology, Beverly, MA. The intensity of cytoplasmic staining was graded as (a) strong (3+); strong cytoplasmic staining with negative background staining, (b) moderate (2+); unequivocal positive staining with negative background staining, (c) weak (1+); faint staining in cytoplasm, or (d) negative; no staining in any cellular component. The photographs were taken at a magnification of x200

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