we report the existence of apparently unique anatomic interactions between lymphocytes and basal keratinocytes , between langerhans ' cells and basal keratinocytes , and between langerhans ' cells and lymphocytes , deduced on the basis of ( 1 ) characteristic cytoplasmic processes extending from one cell into the cytoplasm of adjacent cells , with frequent absence of the intervening plasma membrane at the apexes of these processes , and ( 2 ) intimate apposition of the plasma membranes between the interaction cells over a large surface area .
C0010834
cytoplasm
C0007603
plasma membranes