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. 2021 Dec 29;17(12):e1010203. doi: 10.1371/journal.ppat.1010203

Fig 3. Summary of total frequencies of SARS-CoV-2-reactive CD4+ T cells from ex vivo tetramer staining of PBMC from SARS-CoV-2 exposed and unexposed individuals.

Fig 3

(A) All HLA frequencies. (nS = 31 exposed, 22 unexposed; nM = 22 exposed, 18 unexposed; nN = 22 exposed, 18 unexposed). (B) DR0101-specific frequencies. (n = 5 exposed, 3 unexposed). (C) DR0301/DRB3-specific frequencies. (n = 4 exposed, 4 unexposed). (D) DR0401-specific frequencies. (nS = 5 exposed, 5 unexposed; nM = 4 exposed, 5 unexposed; nN = 4 exposed, 5 unexposed). (E) DR1501/DRB5-specific frequencies. (n = 9 exposed, 6 unexposed). (F) DP0401-specific frequencies. (n = 8 exposed, 6 unexposed). Student’s unpaired t-test; * p≤0.05, ** p≤0.01, *** p≤0.001, **** p≤0.0001.