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Early T cell–dependent PBs form in the absence of single dif- ferentiated CD4+ T cell subsets. (A) Identification of PE+ cells among CD90.22CD11c2F4/802Gr-12 cells (left panel) from PE-enriched spleen and lymph node samples from WT mice immunized with 2W-PE in CFA 11 d earlier. The middle and right panels show gates used to identify PE-specific PBs (B220lowIgG [H+L]high) or GC B cells (B220highCD382GL7+). (B) Numbers of PE-specific total (left panel) and GC B cells (right panel). (C) Gating and (D) numbers of IgM2IgD2 PBs. Data are expressed as the mean value and repre- sentative of two independent experiments (n = 2–6 mice/group). The p values were obtained from a one-way ANOVA and Dunnett posttest that compares all groups with the WT control group. *p , 0.05, ***p , 0.001.


 
     
 
 
 
 
 
International Union of Immunological SocietiesUniversity of South AfricaInstitute of Infectious Disease and Molecular MedicineElizabeth Glazer Pediatric Aids FoundationStellenbosch University