rong tong (IMAGE) Virginia Tech Caption (Standing, from left) Rong Tong, associate professor in chemical engineering; Wenjun "Rebecca" Cai, associate professor in materials science and engineering; Eungyo Jang; and Ziyu Huo gather around Liqian Niu (seated), who is working with a Luminex 200 machine used to analyze tumor cytokine levels. Credit Photo by Hailey Wade for Virginia Tech. Usage Restrictions None 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.