Lab Testing (IMAGE) MediaSource Caption Skin DNA from eczema patients is tested for harmful bacteria in a lab at National Jewish Health. It's part of a clinical trial for a natural eczema treatment that uses beneficial bacteria to address the biologic cause of the chronic skin disease. Credit National Jewish Health Usage Restrictions All multimedia is available for free and unrestricted media use with a courtesy to National Jewish Health 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.