IL7R and infection: The CD127- Teff Early (CD62LhiCD27+), TeffInt (CD62LloCD27+), and TeffLate (CD62LloCD27-) subsets were sorted from B5 TCR Tg donors on day 8 post-infection as shown with the gating strategy in (S1B Fig), and transferred (5x105) into immunodeficient RAG2o mice together with B cells (1x107) from immune BALB/c mice, as in previous work [7, 25].