in the skin , the langerhans cell represents the epidermal equivalent of the macrophage , forming in conjunction with keratinocytes , a reticulo-epithelial system : the fact that the langerhans cell is marked by the glial s-100 protein suggests that the langerhans cell represents a monocyte sub-population , morphologically and functionally different from tissue-histiocytes ;
C0014520
epidermal
C0023005
langerhans cell