The Repertoire of Small Blood Molecules (IMAGE) Weizmann Institute of Science Caption The repertoire of small molecules (metabolites) in blood, many of which originate in the microbiome, showed a different pattern in patients with ALS (top) compared with healthy individuals (bottom). Credit Weizmann Institute of Science 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.