Laboratory Characteristics
| Characteristic | Result |
|---|---|
| Growth at 25 °C | - |
| Growth at 35-37 °C | + |
| Growth at 42 °C | + |
| Nitrate reduction | + |
| Catalase test | + |
| Oxidase test | + |
| Growth on MacConkey agar | + |
| Motility (wet mount) | + |
| Glucose utilization | - |
| Hippurate hydrolysis | + |
| Resistance to naladixic acid | - |
| Resistance to cephalothin | + |
Campylobacter is grown on specially selective "CAMP" agar plates at 42°C, the normal avian body temperature, rather than at 37°C, the temperature at which most other pathogenic bacteria are grown. Since the colonies are oxidase positive, they will usually only grow in scanty amounts on the plates. Microaerophilic conditions are required for luxurious growth. A selective blood agar medium (Skirrow's medium) is used; its selectivity is due to an infusion of a cocktail of antibiotics: vancomycin, polymixin-B and trimethoprim, and growth under microaerophilic conditions at 42°C.
Read more about this topic: Campylobacter Jejuni
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