Table 3.
Results of biochemical tests performed on human M. celatum isolates collected between 2002 and 20051.
| Test | Result |
|---|---|
| Semiquantitative catalase 37°C | <45 mm of foam |
| Catalase 68°C | + |
| Tween hydrolysis (5 days/10 days) | −/− |
| Arylsulfatase (3 days/14 days) | +/+ |
| Tellurite reduction | + |
| Iron uptake | − |
| Tolerance to 5% NaCl | − |
| Tolerance to TCH2 (10 μg/mL) | + |
| Growth on MacConkey agar | − |
| Growth at 25°C | + |
| Growth at 30°C | + |
| Growth at 37°C | + |
| Growth at 45°C | − |
| Growth rate | Slow |
| Colony morphology (Middlebrook 7H10 agar) | Smooth |
1From the beginning of 2006, identification of the isolates did not include biochemical tests any more. Five M. celatum isolates from the period 2002–2005, on which biochemical tests were performed, displayed uniform biochemical characteristics shown in this table.
2TCH: thiophene 2-carboxylic hydrazide.