| Isolate | Morphology | Biochemical tests | ||||
| Shape | Size (µm) | Spore-forming | Gram stain | Catalase | Oxidase | |
| T1 | Rod | 2 × 4 | Yes | + | + | + |
| T2 | Rod | 1 × 2 | Yes | + | + | + |
| T3 | Rod | 1 × 2 | No | + | + | + |
| T4 | Round | 2 | No | − | + | − |