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PD-L1 on Bystander B Cells Suppresses T Cell Recruitment
Splenic distribution patterns (A) and homing coefficients (B) of CXCR5-transduced Icos+/+ (top) or Icos−/− (bottom) T cells 24 hr after adoptive transfer into mixed bone-marrow chimeric hosts of indicated types (2–3 × 106 cells per mouse). Each symbol denotes one tissue section. Data are pooled from three experiments. Scale bar, 50 μm. ∗∗∗p < 0.001; ∗∗∗∗p < 0.0001; ns, not significant.
