The catalase reaction
was negative, and the esculin hydrolysis reaction was quickly positive.
Staphylococcus aureus isolates were identified using colonial morphology, catalase reaction
, and Staphaurex latex testing (Remel, Lenexa, Kansas).
Among these 23 isolates, only 4 isolates showed a positive catalase reaction
and the remaining 19 were catalase negative (Table 2).
Maximal velocities of catalase reaction
ranged between 400 and 990 microliter of [O.
Lactobacilli were identified by standard methods including characteristic Gram stain morphology after growth on agar media (incubated aerobically and anaerobically), and a negative catalase reaction
Suspected staphylococcal isolates were subcul tured onto Columbia blood agar and identified according to colony morphologic appearance, Gram staining, and catalase reaction