Immunofluorescence cell staining (IMAGE) Goethe University Frankfurt Caption Once cells’ quality control mechanism is activated, IRGQ (red) accumulates in special cell organelles, the lsysosomes (green). This is also where the degradation of the non-functional MHC-I molecules takes place. Credit Lina Herhaus Usage Restrictions To be used only when reporting on the indicated research paper. Give credit to Lina Herhaus License Original 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.