Figure 1.


Identification of CD57+ CXCR5+ T cells and their localization in GCs. (A) Flow analyses of CD57 and CXCR5 expression on tonsil CD4 T cells. (B) Specific localization of CD57+ CD4 T cells in GCs. (C) Localization of CD57+ CXCR5+ CD4 T cells in GCs. Antibodies to CD57 (green), CD4 (blue), and IgD (red; B) or CXCR5 (red; C) were used for in situ immunohistochemistry.