FCRL4 and infection: In single cells gated from two biological donors, the average frequency of CD19+/CXCR3+/CD11c-/+/FCRL4+ gated cells was 38.6 ± 15.7% at day 8 post-infection compared to 9.8 ± 3.2% of cells prior to infection (n = 2 LCLs, two-tailed Welch’s t-test p = 0.224).