Figure 3.

Higher anti‐H2 GH HA1 antibodies were detected in elderly population. The S1 serum samples were divided into two groups (born before 1967 and born after 1970), the S1 sera were adsorbed with pH1/H3 rHA‐conjugated latex beads, and mock‐treated or adsorbed sera were tested by MAGPIX (A and B) and DPP (C and D). For each group, the mean MFI and ± the standard deviation are shown. *P<.05. (A) <1967, the binding antibodies to H2 GH HA1 are consistent, P=.57. (B) >1970, the binding antibodies to H2 GH HA1 are reduced significantly, P<.05. (C) <1967, the binding antibodies to H2 GH HA1 are consistent, P=.60. (D) >1970, the binding antibodies to H2 GH HA1 are reduced significantly, P<.05