Figure 2 | Scientific Reports

Figure 2

From: Distinct phenotypic traits of Staphylococcus aureus are associated with persistent, contagious bovine intramammary infections

Figure 2

Bacterial internalization capacity and cellular cytotoxicity. From each group with either high or low within-herd IMI prevalence, HP/ST9 and LP/ST504, three different S. aureus mastitis isolates and the mastitis reference strain RF122 were comparatively tested. (A) S. aureus internalization into mammary epithelial (MAC-T) cells measured as CFU remaining after 2 h of incubation and killing of extracellular bacteria. (B) Cytotoxicity of S. aureus supernatants on MAC-T cells. The relative viability was expressed based on RPMI diluted in DMEM (ratio 1:1)-treated cells (=100%). Each bar represents the arithmetic mean ± standard deviation (SD) from three independent experiments. (*p < 0.05, **p < 0.01; ***p < 0.001; ****p < 0.0001).

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