Table 2.
Differential phenotypic characteristics of Brucella suis (strains 10 and 14) and B. abortus (strains 4 and 13) isolated from cattle in Egypt, 2003–2007. Three reference strains (B. melitensis strain Ether, B. suis strain 1330, and B. abortus strain 544) are included for comparison.
| B. melitensis strain Ether | B. suis strain 1330 | B. abortus strain 544 | Strain 10/14 (B. suis) | Strain 4/13 (B. abortus) | |
|---|---|---|---|---|---|
| H2S production | − | +++ | + | +++ | +++ |
| Urease activity | + in 18–24 h | ++ in <15 min | + in 2 h | ++ in 3–5 min | + in 2 h |
| Growth in presence of dye thionin 1 : 50000 | + | + | − | + | − |
| Growth in presence of dye thionin 1 : 100000 | + | + | − | + | − |
| Growth in presence of dye fuchsin 1 : 50000 | + | − | + | − | + |
| Growth in presence of dye fuchsin 1 : 100000 | + | − | + | − | + |
| Agglutination with A anti-sera | + | + | + | + | + |
| Agglutination with M anti-sera | + | − | − | − | − |