Fig. 3From: Langerhans cell histiocytosis in the adult lumbar spine: case report a High-power photomicrography showing Langerhans histiocytes and mixed numerous eosinophils. b Neoplastic cells showing folded and convoluted nuclei with intra-nuclear groove resembling coffee beans (arrow). Immunohistochemical staining for S-100 protein (c) and CD-1a (d) showing immunoreactivity of Langerhans cellsBack to article page