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Anaplastic Ependymoma : Ki67 Immunostain

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Anaplastic ependymomas are characterized by hypercellularity, increased mitotic activity, and microvascular proliferation. Ki67 labeling index is usually high. The example shown here had a Ki67 labeling index of around 50%. Courtesy of: Dr. Luciano de Souza Queiroz, Dept. of Pathology, Faculty of Medical Sciences, State University of Campinas (UNICAMP), Campinas, Sao Paulo State, BRAZIL. Additional images are here.

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