TABLE 3.
Biochemical test results (API 20 Strep system) for subset of strains
| Isolate | API profile | Identification | Additional testsa
|
||||||
|---|---|---|---|---|---|---|---|---|---|
| Salacin | NaCl | Levane | OPT | NO2-N2 | Glycerol | Dextran | |||
| 0101, OPT-V | 4060401 | 73.5% S. mitis I | + (−) | − | R | ||||
| 15.8% S. oralis | − | NT | − | NT | |||||
| Possible S. pneumoniae | S | ||||||||
| 0102 (1), OPT-V | 0060000 | 69.9% Gemella morbillorum | −b | ||||||
| 28.5% Gemella haemolysans | + | ||||||||
| 0102 (2), OPT-V | 0062400 | 94.6% S. mitis | + (−) | R | − | ||||
| Possible S. pneumoniae | − | S | + (−) | ||||||
| 0103, OPT-V | 0060000 | 69.9% G. morbillorum | −b | ||||||
| 28.5% G. haemolysans | + | ||||||||
| 0105, Opt-V | 0060400 | 81.1% S. mitis | + (−) | R | − | ||||
| Possible S. pneumoniae | − | S | + (−) | ||||||
| 0106, OPT-V | 0060400 | 81.1% S. mitis | + (−) | R | − | ||||
| Possible S. pneumoniae | − | S | + (−) | ||||||
| 0108, OPT-V | 0060400 | 81.1% S. mitis I | + (−) | R | − | ||||
| Possible S. pneumoniae | − | S | + (−) | ||||||
| 0109, OPT-V | 0060000 | 69.9% G. morbillorum | −b | ||||||
| 28.5% G. haemolysans | + | ||||||||
| 0110, OPT-V | 0060000 | 69.9% G. morbillorum | −b | ||||||
| 28.5% G. haemolysans | + | ||||||||
| 0111, OPT-V | 0060400 | 81.1% S. mitis I | + (−) | R | − | ||||
| Possible S. pneumoniae | − | S | + (−) | ||||||
| 0207, OPT-V | 4062400 | 85% S. mitis | + (−) | R | − | ||||
| Possible S. pneumoniae | − | S | + (−) | ||||||
| 0107, GP negative | 0040401 | 85.6% S. mitis | + (−) | R | − | ||||
| Possible S. pneumoniae | − | S | + (−) | ||||||
| Reference strain S. pneumoniaec | 0240450 | 49.2% S. sanguis | + | V | R | + | |||
| 20.0% S. oralis | − | 100% | NT | 78% | |||||
| 17.5% S. pneumoniae | − | NT | − | − | |||||
| 9.0% S. mitis | + (−) | − | R | − | |||||
a
Percentages are percent positive values. Abbreviations: NO2-N2, nitrate to nitrite; R, resistant; S, susceptible; + (−), usually positive, though some may be negative; V, variable; NT, not tested.
b
Favors anerobic growth.
c
The reference strain was BS negative and OPT susceptible by the disk method.