M13-PCR fingerprint patterns of <i>B</i>. <i>cereus</i> strains showing eight possible cross contaminations between patients/patients or patients/environment.

<p>Top panel, lane 1: 1kb DNA ladder. Lane 2: reference strain <i>B</i>. <i>cereus</i> ATCC14579. Lane 2 to 23: <i>B</i>. <i>cereus</i> strains. Bottom: divergence tree between eight samples obtained by hierarchical clustering based on the matrix of pairwise divergences after WGS data.