<prompt> Langerhans cell CD marker is?CD1CD2CD4CD56  <response>: Ans. a CD1Ref: Robbing pathology 9th ed. 1590 Langerhans cells are characterized by two types of markers: an ultrastructural marker, the Birbeck granule and different membrane markers: HLA-D antigens, T4 antigen, and some of the CD1 antigens. These antigens which are specific for the epidermal Langerhans cells, are not expressed by the other epidermal cells. Three CD1 antigens are biochemically defined on human thymocytes, they display a glycoprotein chain non covalently attached to beta-2-microglobulin 