Fig 4.

Phylogenetic relationships among the sequenced bear-derived Listeria innocua strains investigated in this study. The reference strain L. innocua CLIP11262 is included. Strain designations are in the format “strain name_CFSAN number.” SKB115 (ST1481) is not shown. Maximum likelihood tree was constructed using MEGA, with bootstrapping (n = 500); the scale bar indicates distance as assessed by the Tamura-Nei method. Blue, gray, and purple boxes denote the presence of Tn5801.UAM, Tn5801.551, and Tn6000.205, respectively; white boxes denote the absence of tetracycline resistance elements.