Figure 4

Biofilm formation in coinfections of Streptococcus suis and Staphylococcus hyicus. A) Bar plots showing the quantitative biofilm formation (expressed as the absorbance OD595) of one representative S. suis isolate from each of the four main serovars (SVs) (orange), ten random S. hyicus isolates (green), and their coinfections (blue). B) Scanning electron microscopy (SEM) images of biofilm formation in coinfections between S. suis SV2 (1001) and S. hyicus H100 (left) and between S. suis SV9 (969) and S. hyicus H007 (right).