Antibody titers (IMAGE) Hokkaido University Caption The association between antibody titers and age (a) and antibody titers and time of day of vaccination (b), show that the time of has no effect on antibody titers, although there are some significant differences (asterisks and dagger) between age groups (Yujiro Yamanaka, et al. Journal of Biological Rhythms. September 26, 2022). Credit Yujiro Yamanaka, et al. Journal of Biological Rhythms. September 26, 2022 Usage Restrictions This image can be used for reporting purposes without obtaining permission if credited properly. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.