https://medium.com/@UCSF/how-crispr-tools-are-unlocking-new-ways-to-fight-disease-922df77f3fc2

Recent leaps in gene editing technology have brought ideas that just a decade ago seemed like science fiction to the cusp of reality.

The already famous CRISPR system allows scientists to edit faulty genes by cutting and replacing sections of DNA, but new and improved CRISPR techniques have expanded CRISPR’s scalpel into a Swiss Army knife. The new tools give researchers more flexible control of gene function without permanently altering an organism’s genetic code.