Positive controls for RT-LAMP (IMAGE) University of California - San Diego Caption Coronavirus-like nanoparticles, made from plant viruses and bacteriophage, could serve as positive controls for the RT-LAMP test. Credit Soo Khim Chan Usage Restrictions Please credit: Soo Khim Chan 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.