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| Aβ system | number of HBs | β content (%) |
|---|---|---|
| cluster 1 | 22 | 16.7 ± 2.9 |
| cluster 2 | 13 | 10.1 ± 2.3 |
| cluster 3 | 15 | 16.1 ± 2.8 |
| cluster 4 | 20 | 21.4 ± 3.2 |
| cluster 5 | 16 | 28.0 ± 3.5 |
| 2NAO | 24 | 38.5 ± 3.1 |
| 5OQV | 105 | 79.6 ± 2.1 |
| 2BEG | 57 | 77.7 ± 3.7 |
