Figure 6.
Inflammatory cells in PLs. Most inflammatory cells in PLs are CD3-positive T lymphocytes, which also accumulate around PLs (A). CD20-positive B lymphocytes account for only a few leukocytes in PLs (B). CD68-positive macrophages (C) and mast cells (D) show an almost equal distribution in PLs. Original magnification, ×100 (A–D).