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Cellular ELISA detection of antibody in the immune serum (OD450, ¯x± s)
| Group | OD450 |
| PBS control | 0.298 ± 0.017 |
| Empty vector control | 0.347 ± 0.062 |
| Vaccination group | 0.841 ± 0.136 |
Paired Student t-test was used to investigate the difference between two groups.
