We celebrated 50 years of recombinant DNA technology.

我们庆祝重组 DNA 技术诞生 50 周年。

Propagation of the host organism containing the recombinant DNA forms a set of genetically identical organisms, or a clone. This process is hence known as DNA cloning.

宿主和载体。

Prior to the advent of gene cloning and protein production via recombinant DNA techniques, it was necessary to purify these molecules from animal tissues or donated human blood.

这两种来源都有缺陷，包括非人源蛋白功能上的细微差异以及可能存在的病毒的污染。