Research Paper Volume 5, Issue 3 pp 209—226
B cell responses to the 2011/12-influenza vaccine in the aged
Figure 2. Antibody Isotypes. Serum samples collected on days 0, 10 and 28 following vaccination were tested for IgA, IgG and IgM to H1N1 and H3N2 viruses by ELISAs. Graphs show average titers ± SEM.