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Fig. 3 | Biological Procedures Online

Fig. 3

From: Development and Validation of Quantitative Real-Time PCR for the Detection of Residual CHO Host Cell DNA and Optimization of Sample Pretreatment Method in Biopharmaceutical Products

Fig. 3

The determination of detection limit. All standards(3 fg/ul ~ 3 × 106 fg/ul) had an amplification curve with good repeatability. NC represents the negative control, NTC represents the no-template control. Horizontal lines in the figure refer to the baseline, which is determined by the software itself

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