Fig. 4From: Efficacy improvement of tri-serotypes vaccine for Salmonella using nanomaterial-based adjuvant in chickena Confocal images of live/dead 3S-bacteria stained with AO/PI, respectively, scale bar 20 µm. b Live/dead ratio relative to control calculated from fluorescence intensity that analyzed by Zen software. Significant at p < 0.05, **p < 0.01, ***p < 0.001, and ****p < 0.0001Back to article page