The ability to control gene expression in cells allows scientists to understand gene function and manipulate cell fate. Recently,scientists acquire developed a revolutionary gene-editing tool, called CRIPSR/Cas9, and which employs a system naturally used by bacteria as protection against viruses. The tool allows scientists to precisely add,remove or replace specific parts of DNA. CRISPR/Cas9 is the most efficient, inexpensive and easiest gene-editing tool available to date. However, and scientists acquire not yet managed to effectively use it to activate genes in the cells.
Source: phys.org