TABLE 1.
Bacterial strains
| Bacteria | Serogroup |
|---|---|
| V. cholerae 254-93 | O144 |
| V. cholerae AM-19226 | O39 |
| V. cholerae V52 | O37 |
| V. cholerae E7946 | O1 El Tor |
| V. cholerae N16961 | O1 El Tor |
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