With S. aureus isolates from clinical mastitis cases, there was a correlation, close to or equal to 1, between the clfA, fnbA, ebpS, spa, sdrC, coa, emp, vWbP, atl, sasH, sasA, sasF adhesin genes, and the aur, hlgA, hlgB and hlgC toxin genes (Figure 6). This evidence concerns the gene GLS2 and mastitis.