SAG and Bovine mastitis: In contrast (De centorbi et al. 1988; Kenny et al. 1993; Matsunaga et al. 1993; Takeuchi et al. 1998; Larsen et al. 2002; Morandi et al. 2007; Aarestrup et al. 1995) studies of the presence of sag’s (superantigens) S. aureus isolated from Danish cases of clinical and subclinical bovine mastitis showed that Danish bovine S. aureus generally did not carry the genes for known sags (it is necessary to mentioned that the presence of seg,sei and sej gene were not examined).