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Table 1.
Three-factor and three-level of orthogonal experiment
| Factor Level | C(µg/mL) | A(µg/mL) | P(µg/mL) |
|---|---|---|---|
| 1 | 4 | 24 | 24 |
| 2 | 8 | 48 | 48 |
| 3 | 16 | 96 | 96 |