However, the analysis of relative mRNA expression levels can be complicated by the fact that relatively small changes in mRNA expression can produce large changes in the total amount of the corresponding protein present in the cell.
然而，相对mRNA表达水平的分析可能因以下事实而变得复杂：mRNA表达的相对小的变化可以在细胞中存在的相应蛋白质的总量中产生大的变化。