staphylococcus aureus on baird-parker agar

staphylococcus aureus microbiology scientist laboratory equipment science bacterium bacteriologist healthcare medicine biology medical condition mrsa antibiotic resistant streaker staphylococcal enterotoxicosis chemistry chemical reaction agar analysis bacteria isolated baird parker bio biochemistry biotechnology cell colony contamination doctorate safety lab microbes microbial blur phd research plate quadrant streak selective focus single yeast