<i>Streptococcus pyogenes</i> (IMAGE) Helmholtz Centre for Infection Research Caption Streptococcus pyogenes is one of the bacteria in which the HZI scientists have studied the CRISPR-Cas system. Credit © HZI / Rohde Usage Restrictions None 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.