Strains used in the study
| Microorganism | Strain | Source |
| Prevotella intermedia | ATCC 25611 | A |
| ATCC 20706 | A | |
| Prevotella oralis | ATCC 20702 | |
| Prevotella paludivivens | ATCC 17968 | |
| Prevotella nigrescens | ATCC 13386 | |
| Bacteroides fragilis | ATCC 25285 | |
| Prevotella nigrescens | 138 | B |
| 582 | B | |
| 621 | B | |
| 634 | B | |
| 655 | B | |
| 658 | B | |
| 672 | B | |
| 1006 | B | |
| 1024 | B | |
| 1032 | B | |
| 1044 | B | |
| 1048 | B | |
| 1057 | B | |
| Prevotella oralis | 1243 | B |
| Prevotella oris | 1037 | B |
| Prevotella baroniae | 651 | B |
| 1033 | B | |
| Prevotella bivia | 1050 | B |
| 1071 | B | |
| Prevotella buccae | 578 | B |
| 674 | B | |
| Prevotella denticola | 583 | B |
| 608 | B | |
| Prevotella disiens | 1059 | B |
| 1074 | B | |
| Prevotella melaninogenica | 1029 | B |
| 1049 | B | |
| Prevotella multiformis | 507 | B |
| 524 | B | |
| Prevotella intermedia | 1045 | B |
| Actinomyces odontolyticus | R2 | B |
| Pseudomonas aeruginosa | PAO1 | B |
| Staphylococcus aureus | ATCC 35556 | A |
A, German Collection of Microorganisms and Cell Cultures (DSZM); B, Institute for Medical Microbiology and Hygiene, Tübingen, Germany; identified by API.