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Microscopic morphology of representative lymph node sections and immunohistochemical detection of HHV8 infection. A: Histology of the axillary lymph node showing proliferation of spindle cells (lower left) and partly involuted germinal center, surrounded by small lymphocytes (upper right). B: HHV8 positive spindle cells. C: HHV8 positive lymphocytes in the follicular mantle zone.
