Figure 1.
Relevant histologic and immunophenotypical characteristics were analyzed. Plaque versus tumor stage (H/E stain; top left and right panels, respectively; original magnifications, × 50, × 100 [inset]); high proliferative index vs low proliferative index (Ki67 low, Ki67 high, middle panels; original magnification, × 100); and common phenotype (CD4+, CD8-, middle panels; original magnification, × 200) vs aberrant phenotype (CD4- and/or CD8+, bottom panels; original magnification, × 200).