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Heatmap displaying the r values obtained from Spearman correlation analysis performed among HCoV-NL63 and SARS-CoV-2 derived peptides used in the previous experiments in the pre-pandemic cohort divided by age groups (A) (5–10 years old), (B) (11–20 years old), (C) (21–40 years old), (D) 41–60 years/old) and (E) (61–80 years old), as shown in Table 3.
