Glioblastoma Cells, Case Western Reserve (IMAGE) University of California - San Diego Caption Glioblastoma tumor cells with extrachromosomal EGFR gene amplification (red) indicated by white arrows. Credit Photo courtesy of Case Western Reserve. Usage Restrictions Use photo credit as indicated 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.