Correlation between virulence of <i>E. faecalis</i> strains alone (expressed by LT50s in days) and in combination with <i>E. coli</i> strains.

<p>The linear regression model confirmed a linear relation. Dot corresponds to <i>E. faecalis</i> strains associated with NECS23048; cross corresponds to <i>E. faecalis</i> strains associated with NECS19923. The line and the dotted line established the linear regression of NECS23048 and NECS19923, respectively.