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Saturation transfer (ST) efficiency for 1 μM CB[6] samples in PBS with varying putrescine concentration.
| Putrescine (μM) | Calculated free CB[6] concentration (μM) | ST efficiency |
|---|---|---|
| 0 | 1.0 | 0.68 ± 0.09 |
| 1 | 0.41 | 0.67 ± 0.10 |
| 2 | 0.19 | 0.34 ± 0.06 |
| 5 | 0.064 | 0.25 ± 0.03 |
| 10 | 0.030 | 0.16 ± 0.03 |
| 20 | 0.014 | 0.10 ± 0.01 |
| 50 | 0.0056 | 0.08 ± 0.01 |
