Fig. 3. Humoral immune response in vaccinated mice.

Sera were collected 21 days after the last immunization. (a) PCV2-specific IgG level, sera samples were diluted 1:100 (n = 6). (b) PCV2-specific neutralizing antibodies level was measured by IPMA (n = 6). (c) M2e-specific IgG level (n=6). M2e of derived from humans, swine and avian IAV were mixed in equal amounts as the detection antigen (1 μg/mL). (d) Human IAV M2e-specific IgG level (n=6). (e) Swine IAV M2e-specific IgG level (n=6). (f) Avian IAV M2e-specific IgG level (n=6).