Fig. 3

a Immunohistochemical study for CD68 which is positive in histiocytes (× 200). b Immunohistochemical study for S100 which is positive in histiocytes (× 200)

a Immunohistochemical study for CD68 which is positive in histiocytes (× 200). b Immunohistochemical study for S100 which is positive in histiocytes (× 200)