close up of scientist counted the colony of staphylococcus aureus cultured with mannitol salt agar in petri dish show yellow.

agar analysis aseptic aureus autoclave background bacteria biology bright cells close closeup colonies colony count counted counter culture cultured disease dish equipment experiment food fungi growth hand health healthcare healthy inflection lab laboratory liquid mannitol mark media medical medicine methylene microbiology petri pharmaceutical pink plate red research researcher results salt science scientist selective show solution staphylococcus technique test using yellow