Figure 3.

Immunohistochemical staining for CC chemokine ligand 18 (CCL18) (a–f). In non‐specific lymphadenitis, a few follicular dendritic cells were positive (a, low magnification; b, high magnification). In human T‐cell leukemia virus type 1‐associated lymphadenitis (c), Hodgkin's‐like type lymph node lesion (d), pleomorphic type lymph node lesion (e), and anaplastic large cell type lymph node lesion (f), dendritic cells but not tumor cells were positive, and Hodgkin's‐like giant cells were also positive (d). Immunohistochemical staining for CX3C chemokine receptor 1 (CX3CR1) (g, h). In non‐specific lymphadenitis, many follicular lymphocytes and a few interfollicular lymphocytes were positive (g). In pleomorphic type (h), the same cells were positive for CX3CR1 and were fewer than those in non‐specific lymphadenitis.