Before revision:  In this study, we show that the RNAP-II based reinitiation process in gene expression can increase or decrease the mean and Fano factor both at the mRNA levels and therefore, can have important contributions on cellular functions .
After revision:  In this study, we have shown that the RNAP-II based reinitiation process in gene expression can increase or decrease the mean and Fano factor both at the mRNA levels and therefore, can have important contributions on cellular functions .