Immune Response (IMAGE) Picower Institute at MIT Caption On the right are neurons from a Huntington's model mouse, showing much more PKR (a marker of immune response to mitochondrial RNA) in green than neurons on the left, which are from a healthy mouse. Credit Hyeseung Lee/MIT Picower Institute Usage Restrictions with credit 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.