Figure 7From: A novel recombinant pseudorabies virus expressing parvovirus VP2 gene: Immunogenicity and protective efficacy in swineImmunogenicity of PRV SA215/VP2 in gilts. Six gilts were divided into two groups. Group 1 was immunized with recombinant PRV SA215/VP2, and group 2 served as negative control. Data represent the mean antibody titer of each group of gilts determined by indirect ELISA at 0, 28, 77 and 114 d. The horizontal line represents cut-off value.Back to article page