Protein A antibody,Genetex,GTX72895

S. aureus is a Gram positive, spherical bacterium (coccus) which on microscopic examination appears in pairs, short chains, or bunched, grape like clusters. The bacterium forms characteristic golden yellow colonies on blood agar cultures. It is part of the normal flora of humans and is found on nasal passages, skin and mucous membranes. It is an opportunistic pathogen of humans, causes a wide range of suppurative infections, as well as food poisoning, septicaemia and toxic shock syndrome. S. aureus has become resistant to many commonly used antibiotics; some strains are now resistant to vancomycin.