Figure 3.

Distribution of CD3⁺ and CD4⁺ cells. PALT stained with anti-CD3 (panel A) and anti-CD4 (panel B). Note that the majority of the lymphocytes are double positive for CD3 and CD4 (yellow in Panel D). Several CD3⁺/CD4^- cells are seen primarily along the periphery of the PALT and bordering a pineal follicle (arrows, Panel D). The DIC image (Panel C) shows the border of the PALT (white dashed line).