| Protective Conjugate
Treatment | O-PS6-ADH-rEPA (survived/total animals) | O-PS10-ADH-rEPA (survived/total animals) | O-PS11-ADH-rEPA (survived/total animals) | O-PS20-ADH-rEPA (survived/total animals) |
| MPL adjuvant | 3/5 | 5/5 | 5/5 | 5/5 |
| Freund’s adjuvant | 2/5 | 5/5 | 3/5 | 4/5 |
| No adjuvant | 0/5 | 3/5 | 2/5 | 3/5 |
| Unconjugated O-PS/rEPA | 0/5 | 1/5 | 1/5 | 1/5 |
| Negative control | 0/5 | 0/5 | 0/5 | 0/5 |