Staphylococcus aureus bacteria illustration showing gram-positive cocci, catalase test, and comparison with Streptococci.

Staphylococcus

Staphylococcus Introduction Staphylococcus is a genus of Gram-positive cocci that form grape-like clusters (staphylo = bunch of grapes). They are facultative anaerobes, non-motile, non-spore forming, and catalase-positive.Found as normal flora on skin, anterior nares, throat,