Mаnnitоl-fermenting cоlоnies grew on the MSA plаte, аnd a Gram stained slide was prepared. Results are shown below. A tube coagulase test, in which a colony of the bacteria was placed in a tube of rabbit plasma and mixed, was also performed. Results are below. Based on the results of the media tested, the organism infecting Jackson is most likely Staphylococcus aureus.