Figure 4From: Surface display of Salmonella epitopes in Escherichia coli and Staphylococcus carnosusFlow cytometry analysis of E. coli expression of salmonella antigens. E. coli O:17 expression of the fusion proteins. The negative control consists of cells carrying the empty plasmid. Fusion proteins were detected by a biotinylated His tag-specific antibody conjugated to Streptavidin-Alexa488.Back to article page