Fig. 6

DIFFERENT LYMPHOCYTE PRESENTATION IN SQUAMOUS-CELL CARCINOMA (a-c) AND ADENOCARCINOMA (d-f): In squamous-cell carcinoma dense CD3+ T-lymphocyte infiltrates are present (b), which are scarce in adenocarcinoma (e). Some CD20+ B-lymphocytes are present in squamous cell carcinoma (c), but completely absent in adenocarcinoma (f). (a and d- Hematoxylin and Eosin staining; b, c, e, f- Immunohistochemistry; objective × 10)