CRISPR-Cas9 (IMAGE) University of Toronto Caption Toronto scientists have developed a more powerful genome editing method to allow editing of multiple genes at a time. Credit Ernesto del Aguila III, National Human Genome Research Institute, NIH Usage Restrictions credit the author License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.