it appears that idcs and langerhans cells ( lcs ) , surrounded by t-lymphocytes , are similar in morphology and function , but both of them can be characterized by the positive of s-100 protein and leu 6 , absence of lysozymes and cea by pap method , and positive of atp-ase and acp-ase , and they differ only by having or not having birbeck granules .
C0023005
langerhans cells
C0230694
birbeck granules