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Determination of median lethal dose of Escherichia coli to chicks.
| Bacterial concentration (CFU/mL) | Number of samples | Number of deaths |
|---|---|---|
| 1.00 × 107 | 6 | 6 |
| 3.33 × 107 | 6 | 6 |
| 1.11 × 106 | 6 | 5 |
| 3.70 × 105 | 6 | 4 |
| 1.23 × 105 | 6 | 2 |
| 4.11 × 104 | 6 | 1 |
| 1.37 × 104 CFU/mL | 6 | 0 |
| LD 50 | 2.12 × 10 4 CFU/mL |
