This type of medium is both selective and differential. The MSA will select for organisms such as Staphylococcus species which can live in areas of high salt concentration (plate on the left in the ...
Gram reaction was determined with the bioMérieux Gram Stain kit (G1060, Solarbio). Catalase activity was assessed by observing bubble formation in 3% (v/v) hydrogen peroxide solution. Oxidase activity ...