Volume 9, Number 3—March 2003
Dispatch
Mycobacterium celatum Pulmonary Infection in the Immunocompetent: Case Report and Review
Table
Biochemical analysis of the described isolate (Mycobacterium celatum) compared to those of M. avium complex and M. xenopi
Characteristics | Resultsa for: |
||
---|---|---|---|
Our isolate | M. avium complex | M. xenopi | |
Niacin |
– |
– |
– |
Nitrate reduction |
– |
– |
– |
Thermostable catalase |
+ |
+ |
+ |
Tween 80 hydrolysis (10 days) |
– |
– |
– |
Tellurite reduction |
+ |
+ |
V |
Arylsulfatase (3 days) |
– |
– |
+ |
Urease |
– |
– |
– |
Catalase (over 45 mm of foam) |
– |
– |
– |
Photochromogenicity |
– |
– |
– |
Scotochromogenicity |
+ |
– |
+ |
Growth at 25°C |
+ |
+ |
– |
Growth at 37°C |
+ |
+ |
+ |
Growth at 45°C |
+ |
– |
+ |
MacConkey w/o CV |
– |
– |
– |
Tolerance to NaCl (5%) |
– |
– |
– |
Tolerance to TCH (5 mg/mL) |
+ |
+ |
+ |
Growth rate |
Slow |
Slow |
Slow |
Colonial morphologic features | Smooth | Smooth | Smooth |
a– negative; +, positive; v, variable; TCH, thiophene-2-carboxylic acid hydrazide.