| Bacterial strains | Origin |
| Campylobacter spp. | |
| C. jejuni | NCTC 11168 |
| C. jejuni | NCTC 11828 |
| C. jejuni (n = 4) | Clinical isolate |
| C. coli | NCTC 11366 |
| C. coli | Clinical isolate |
| C. concisus | ATCC 51561 |
| C. concisus | ATCC 51562 |
| C. mucosalis | ATCC 43264 |
| C. hyointestinalis | Clinical isolate |
| C. lari | Clinical isolate |
| C. upsaliensis | Clinical isolate |
| C. sputorum subsp. bubulus | Clinical isolate |
| Non-campylobacter | |
| Escherichia coli | ATCC 25922 |