CD marker of histiocytosisis:: (A) CD 1a, (B) CD 1b, (C) CD 1c, (D) CD 1d
Answer is A. a. CD 1 a(Ref: Nelson's 20/e p 2484-2489, Ghai 8/e p 620-623)Immunohistochemistry shows: CD1a, S-100 or Langerin (CD 207) in Histiocytosis.