Zinc (IMAGE) Johns Hopkins Medicine Caption Researchers used human intestinal organoids in their study. This confocal immunofluorescence image shows a stem cell-derived human intestinal organoid treated with zinc. Credit The Hackam Lab, Johns Hopkins Medicine Usage Restrictions N/A 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.