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| Noise (Mean±STDEV) | Gapdh 3′/5′ signal ratios | |||||
| Repeat 1 | Repeat 2 | Repeat 3 | Repeat 1 | Repeat 2 | Repeat 3 | |
| SP1 | 1.21±0.04 | 0.9±0.03 | 1.16±0.03 | 1.01 | 1.00 | 1.10 |
| SP2 | 1.13±0.05 | 0.89±0.02 | 1.13±0.04 | 1.05 | 1.04 | 1.08 |
| SP3 | 1.16±0.05 | 1.00±0.04 | 1.07±0.02 | 1.03 | 0.99 | 1.17 |
| SP4 | 1.12±0.04 | 0.84±0.03 | 1.12±0.02 | 1.01 | 1.07 | 1.14 |
