For CRISPR, tweaking DNA fragments before inserting yields highest efficiency rates yet Jan 2, 2020 1:45 pm by Liz Ahlberg TouchstoneResearch Share on Facebook Tweet Email Images Illinois researchers achieved the highest reported rates of inserting genes into human cells with the CRISPR-Cas9 gene-editing system, a necessary step for harnessing the technology for clinical gene-therapy applications. Share on Facebook Tweet Email