Research Article

Generation of Biotechnology-Derived Flavobacterium columnare Ghosts by PhiX174 Gene E-Mediated Inactivation and the Potential as Vaccine Candidates against Infection in Grass Carp

Figure 4

Serum agglutination titres of fish vaccinated with FCG and FKC at different time points postprimary immunization. Grass carp were vaccinated with FCG or FKC via intraperitoneal injection with a boost at 4 weeks after primary immunization. Serum agglutination titres represent the highest dilutions that gave rise to positive reaction. The titres of FCG group were significantly higher than FKC group at all the examined time points ( 𝑃 < 0 . 0 1 ).
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