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Graphs (A,B) shows the serum antibodies titration IgG and IgA, respectively, in immunized mice after administrating SARS-CoV-2 recombinant antigens in formulated vaccines. Serum was collected from each tested mouse group in week 3 and week 7 after administrating the recombinant proteins to the animals. Pos C is positive control and Neg C is the negative control group. Data are driven from 5 individuals per group, p value < 0.05.
