Figure 5From: SagE induces highly effective protective immunity against Streptococcus iniae mainly through an immunogenic domain in the extracellular regionInteraction between vaccine-induced antibodies and bacterial cells. Streptococcus iniae was incubated with serum from pSagE-vaccinated fish (A and C) or with serum from control fish (B and D). Cell-bound antibodies were detected with FITC-labeled antibody. The cells were observed under a microscope with (A and B) or without (C and D) fluorescence.Back to article page