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| Clone type | No of clones with identical sequence | % of distinct DNA sequence |
|---|---|---|
| NTV1 | 42 | 35 |
| NTV2 | 28 | 23 |
| NTV3 | 20 | 17 |
| NTV4 | 18 | 15 |
| NTV5 | 5 | 4 |
| NTV6 | 3 | 2.5 |
| NTV7 | 2 | 1.7 |
| NTV8 | 2 | 1.7 |
