Figure 1. Low magnification of lymph node from patient with chronic skin rash showing large numbers of pale staining T-zone histiocytes including Langerhans cells and interdigitating reticulum cells which greatly expand interfollicular T-aone of lymph node.
Figure 2. Macrophages containing brown staining melanin pigment and T-zone histiocytes including pale staining Langerhans cells and interdigitating reticulum cells. Also note high endothelial venules through which lymphocytes enter lymph node.