TABLE 4.
Potentially useful tests included in the ID32 system for differentiating unusual gram-positive cocci
| Species | % Strains positivea with:
|
|||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Adh | β-Gar | α-Gal | Man | Sbl | Tre | Sac | Darl | APPA | β-Gal | GTA | Hip | Mal | Ure | |
| A. otitidis | — (−) | 30 (v) | — (−) | — (−) | — (−) | 40 (v) | — (−) | — (−) | 10 (v) | 100 (+) | — (−) | 80 (+) | 10 (v) | — (−) |
| D. pigrum | 88 (+) | 94 (+) | 13 (v) | 59 (v) | 38 (v) | 88 (+) | 97 (+) | 6 (−) | 13 (v) | 97 (+) | 88 (+) | 50 (v) | 100 (+) | — (−) |
| F. hominis | 75 (v) | 100 (+) | 75 (v) | — (−) | — (−) | — (−) | 25 (v) | — (−) | 100 (+) | 100 (+) | 100 (+) | 75 (v) | 25 (v) | 75 (v) |
| F. ignava | 60 (v) | 20 (v) | 40 (v) | 20 (v) | 20 (v) | 20 (v) | 40 (v) | — (−) | 80 (+) | 60 (v) | 80 (+) | 80 (+) | 40 (v) | 40 (v) |
| F. languida | — (−) | — (−) | — (−) | — (−) | — (−) | 100 (+) | — (−) | — (−) | — (−) | — (−) | 100 (+) | — (−) | — (−) | — (−) |
| F. sourekii | — (−) | — (−) | — (−) | 67 (v) | 67 (v) | 100 (+) | 67 (v) | 67 (v) | 33 (v) | — (−) | 33 (v) | 100 (+) | 100 (+) | — (−) |
| F. tabacinasalisb | — (−) | — (−) | 100 (+) | 100 (+) | — (−) | 100 (+) | 100 (+) | — (−) | 100 (+) | — (−) | — (−) | — (−) | — (−) | — (−) |
| I. ruoffiae | 67 (v) | — (−) | — (−) | 67 (v) | — (−) | 67 (v) | 67 (v) | 33 (v) | — (−) | — (−) | — (−) | 100 (+) | 33 (v) | 67 (v) |
a
The number given is the percentage of strains found to be positive; the interpretation of the test result as positive (+), negative, or variable (v) is indicated in parentheses. Abbreviations: Adh, arginine dihydrolysis; Man, mannitol, Sbl, sorbitol; Tre, trehalose; Sac, saccharose; Darl, d-arabitol; Hip, hydrolysis of hippurate; Mal, maltose; Ure, urease. —, 0%.
b
Type strain only, no human isolates tested.