study for bacteria staphylococcus aureus in the human nose.

agar anaerobe analysis antibiotic aureus background bacteria bacterial bacteriology bacterium biofilm biology biotechnology blood care cell cocus colonies colony culture danger disease dish enterotoxin experiment firmicutes gram growth health hospital hygiene icon infection intoxication isolated lab laboratory magnification media medical medicine medium micro microbiology microorganism microscope nose organism pathogens petri plate positive red research risk round safety science scientific shaped stain staphylococcus test toxic toxins