Skip to main content
. 2021 Jul 16;17(7):e1009761. doi: 10.1371/journal.ppat.1009761

Fig 2. SARS-CoV-2-specific circulating T follicular helper cells are detected at the first visit in 6 out of 26 convalescent individuals.

Fig 2

(A) Representative examples of antigen-specific cTfh (CD4+CXCR5+PD1+) detected upon stimulation with SARS-CoV-2 M, N, and S protein peptides for Visit 1 in three individuals (CID8, CID11, and CID13, respectively). Negative control of unstimulated cells shown in the top row. (B) Frequency of individuals mounting a positive cTfh response at their first visit to any SARS-CoV-2 protein and to the M, N, and S protein peptide pools.