Scientists study mirna to understand its role in gene regulation.

科学家研究mirna（MicroRNA，一类内生的、长度约为20-24个核苷酸的小RNA分子）以了解其在基因表达调控中的作用。

The first serum-miRNA biomarker discovered was miR-21.

第一个被发现的血清microRNA标志物是miR-21。

Developed a method for bead-based miRNA profiling that they found to be more sensitive since the hybridizations were taking place in solution.

不久之后，Lu等人发展了基于微球的microRNA分析方法，他们发现当杂交反应在溶液中进行时，这一方法的敏感度更高。

Shortly after, Lu et al. developed a method for bead-based miRNA profiling that they found to be more sensitive since the hybridizations were taking place in solution.

不久之后，Lu等人发展了基于微球的microRNA分析方法，他们发现当杂交反应在溶液中进行时，这一方法的敏感度更高。