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| Voltage (kV) | Transformation frequencya (cfu/μg plasmid DNA) | |
|---|---|---|
|
|
||
| Mason procedure | Modified procedure | |
| 1.5 | 1.1 × 102 | 4.3 × 103 |
| 2.0 | 2.7 × 102 | 8.6 × 103 |
| 2.5 | Not detectedb | 3.4 × 103 |
Data are obtained from three experiments.
Less than 10 transformants per μg plasmid DNA.
