Neighbour-joining phylogenetic tree based on 16S rRNA gene sequences showing the positions of strains LU2006-1 T, LU2006-2, LU2006-3 and A11-3426 and other members of the genus Listeria . 16S rRNA gene sequence similarities between all four L. fleischmannii isolates were 100%. Bootstrap values (>80 %) based on 1000 replications are shown at branch nodes. Members of the genera Bacillus and Brochothrix were used as outgroups. Bar, 0.01 substitutions per site.