Figure 3.
Photomicrographs of the tumor. A: The tumor consists of diffuse sheets of large malignant lymphoid cells (HE, × 20); B: Immunostaining of the tumor. The tumor cells are positive for CD20 ( immunostaining, × 20).
Photomicrographs of the tumor. A: The tumor consists of diffuse sheets of large malignant lymphoid cells (HE, × 20); B: Immunostaining of the tumor. The tumor cells are positive for CD20 ( immunostaining, × 20).