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Immunohistochemical analyses of S100, CD1a, and langerin in Langerhans cell histiocytosis (LCH) samples. (A) Hematoxylin-Eosin (HE) staining of the representative LCH sample. Proliferation of Langerhans cells is observed. (B–D) Immunohistochemical staining for S100 (B), CD1a (C), and langerin (D). (B–D) indicate S100-, CD1a-, and langerin-positive cells, respectively. Scale bar = 100 μm.
