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The prognostic value of Ki‐67 antigen in non‐Hodgkin lymphoma of waldeyer ring and the nasal cavity

Background. A monoclonal antibody, Ki‐67, recognizes an antigen expressed in all phases of the cell cycle, except G0, and can be used as a simple histologic marker of cell proliferation. To assess the prognostic value of the growth fraction in non‐Hodgkin lymphoma of Waldeyer ring (W‐NHL) and the nasal cavity (N‐NHL), the authors applied Ki‐67 immunostaining combined with image analysis on such lymphomas.