The candidate miRNAs were further confirmed with quantitative real-time polymerase chain reaction (qRT-PCR). qRT-PCR was performed using the QuantiFast® SYBR® Green PCR Master Mix in an ABI 9700 qPCR system (Applied Biosystems, Foster City, CA, USA). The relative gene expression values of the target miRNAs were normalized to that of RNU6B (U6) and the differences were calculated using the 2−∆∆Ct method.25
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