Figure 3

Influenza-specific CD8 ⁺ T-cell responses to vaccination in the per protocol immunogenicity cohort. Box and whisker plots describing the frequency of CD8⁺ T cells specific for the three (pooled) influenza vaccine strains and induced to express at least two immune markers. The whiskers extend to the lowest (Min) and highest (Max) values; the box extends to the 1st quartile (Q1) and 3rd quartiles (Q3) in which the median is marked by a horizontal line.