Table 3.
The design approach for determining the optimization of C. perfringens toxinotypes in central–composite design (CCD).
| Factors | Coded symbols | Levels | |
|---|---|---|---|
| −1 | +1 | ||
| α-toxin (plc) | A | 5 | 9 |
| ε-toxin (etx) | B | 6 | 9 |
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