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| Number of freeze–thaw cycles |
|||||
|---|---|---|---|---|---|
| 0 | 5 | 10 | 15 | 20 | |
| cjFP510 | 1 | 0.890 ± 0.04 | 0.847 ± 0.04 | 0.763 ± 0.04 | 0.714 ± 0.04 |
| EmGFP | 1 | 0.705 ± 0.04 | 0.528 ± 0.05 | 0.331 ± 0.08 | 0.132 ± 0.06 |
Relative fluorescence intensity (Average ± S.D.) is shown. The intensity of the control sample was defined as 1. Experiments were conducted on four independent occasions.
