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Typical immunohistochemistry staining of tumor‐infiltrating lymphocytes (TILs) within retroperitoneal liposarcoma. Specific TILs were stained brown, and the typical cells are (A) CD4+ TILs, (B) CD8+ TILs, (C) CD20+ TILs, and (D) FoxP3+ TILs (arrow). Magnification, ×400
