Sample handling (IMAGE) NIH/National Eye Institute Caption Bin Guan, Ph.D., a fellow at the Ophthalmic Genomics Laboratory at NEI, holding samples prepared with the chelating agent that preserves SARS-CoV-2 RNA for detection by RT-qPCR. Credit Dustin Hays, National Eye Institute Usage Restrictions No restrictions. License Public Domain 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.