摘要
最近几年中，微小核糖核酸和基因转录后调节领域出现了飞快的发展。微小核糖核酸．或缩写为miRNA，是小的．调节性核糖核酸，它与小的干扰核糖核酸（SiRNA）类似．但它是体内天然表达的。
The last few years have seen a rush of discoveries in the field of microRNAs and the regulation of genes after their transcription into RNA. MicroRNAs, or miRNAs for short, are small regulating RNAs akin to small interfering RNAs （siRNA）, but which are naturally expressed in vivo.
