Transparent capillary cell (image) Washington University in St. Louis Share Print E-Mail Caption Bingyuan Ma holding a transparent capillary cell. Bai's Lab at the McKelvey School of Engineering is the only one in the world with such diagnostic cells. Credit Peng Bai Lab Usage Restrictions Use allowed with proper attribution Share Print E-Mail 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.