Innovative Techniques and Reagents for Improved Genetic Engineering
The development of restriction enzyme technology in the 1970s was a breakthrough in genetic engineering. For the first time, scientists were able to cut DNA at specific sites and insert sequences with matching ends. However, the technology was limited to insertion at particular sites in the host vector, and the size of the inserted DNA quickly became a limiting factor. The National Cancer Institute’s (NCI) solution is a technology that consists of three specialized bacterial strains and seven plasmids, developed around a genetic system in E.