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The pattern of Ki67 immunostaining in breast cancer. A. Heterogenous staining of Ki67. There was a hot spot in the lower-left corner. B. Homogenous staining. C. The hot spot distributed centrally. D. The areas annotated by red circle were scattered hot spots. E. The hot spot in the invasive edge of the tumor. F. The hot spot in the interior of the tumor. A high-resolution version of the image is available as eSlide:VM00001-VM00006.
