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. 2022 Aug 1;9:963393. doi: 10.3389/fmed.2022.963393

Figure 4.

Figure 4

Hematoxylin and eosin staining of the biopsy specimen showing diffuse proliferation of small- to medium-sized lymphoid cells with slightly enlarged round nuclei (magnification, × 200) (A). Immunohistochemical staining showing lymphoid cells positive for CD20 (× 100) (B) and bcl-2 (× 100) (C) and negative for CD5 (× 100) (D), CD10 (× 100) (E), and cyclin D (× 100) (F).