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Figure 3: Immunohistochemical studies demonstrate that the infiltrating atypical lymphocytes were positive for CD3 (a), CD4 (b), and CD45RO (c) (H and E, 100), whereas negative for CD5, CD7, CD20, CD30, and CD56 (picture not shown)

Figure 3: Immunohistochemical studies demonstrate that the infiltrating atypical lymphocytes were positive for CD3 (a), CD4 (b), and CD45RO (c) (H and E, 100), whereas negative for CD5, CD7, CD20, CD30, and CD56 (picture not shown)