Distribution of bacteriocin biosynthetic gene clusters in species of non-aureus staphylococci isolated from milk of Canadian dairy cows, displayed on the phylogenetic tree from Naushad et al. (22). Bacteriocin types are indicated by the following abbreviations: L, lanthipeptide; S, sactipeptide; Ls, lasso peptide; II, class II double glycine leader peptides; C, circular bacteriocins; Lt, lactococcin-like.