The PCR product was purified using the ExoSAP clean-up kit (Thermofisher Scientific, USA). The PCR amplicons were then sequenced using the BigDye Cycle Sequencing Kit (Applied Biosystems, USA). The sequencing was performed with the same forward primers as were used for the RT-PCR [43 (link)]. After the sequencing reaction, an ethanol precipitation was performed and the final product was loaded in ABI PRISM 3130 automated sequencer (Applied Biosystems, USA) [44 (link)].
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