James Waring, Johns Hopkins University (IMAGE) Johns Hopkins University Caption James Waring, one of the Johns Hopkins student inventors, describes the team's device to improve the collection of cord blood stem cells. Credit Will Kirk/JHU Usage Restrictions None 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.