HEAL Semantic Search (HSS) 2.1 is now available, bringing a refreshed interface that makes it easier to explore related studies, variables, Common Data Elements (CDEs), and biomedical concepts from a single search; compare how concepts and variables are defined and measured across studies; and access insights from 20 newly added data dictionaries, over 1000 HEAL studies, and 233 CDEs. Get started today by entering a search term relevant to your research.