Fig 1. Dendrogram of RAPD profiles of 89 Streptococcus agalactiae isolated from bovine clinical mastitis in 9 dairy herds of southeastern Brazil.

Three clusters were created based on the genetic relationship of isolates (Ia, n = 36; Ib, n = 33; and II, n = 19). One isolate (t45) was not included into clusters because it had a lower level of similarity in comparison to other isolates. The dendrogram was generated by the unweighted pair group method with arithmetic averages.