Figure 6From: The spontaneously produced lysogenic prophage phi456 promotes bacterial resistance to adverse environments and enhances the colonization ability of avian pathogenic Escherichia coli strain DE456Cytotoxicity of phage particles phi456. After being exposed to phi456 in DMEM for 24 h, the viability of DF-1 chicken embryo fibroblast cells was assessed using the trypan blue exclusion assay. The data represented the average of three independent assays. Error bars indicate standard deviations. Student’s t-test was used to analyze the data.Back to article page