Fig. 3From: Rapid differentiation of PEDV wild-type strains and classical attenuated vaccine strains by fluorescent probe-based reverse transcription recombinase polymerase amplification assaya Sensitivity of PEDV universal real-time RT-RPA. Fluorescence development over time using a dilution range of 108–101 copies of the RNA standard. b Standard curves of PEDV real-time RT-RPA. Linear regression of the data providing a formula of Yu = −1.27x + 14.20 (R2 = 0.993) between the corresponding amount of RNA copy numbers and time, when performed by PEDV universal real-time RT-RPABack to article page