Figure 2.
The dynamic changes of antibody titer in each group (log2) in Exp. 2. a,bBars in the same day without the same superscripts differ significantly (P < 0.05).
The dynamic changes of antibody titer in each group (log2) in Exp. 2. a,bBars in the same day without the same superscripts differ significantly (P < 0.05).