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Interests are based on the terminology in the Unified Medical Language System (UMLS), which brings together biomedical vocabularies from various sources, including MeSH, OMIM and GO, as well as other terms extracted from PubMed. The UMLS is updated twice a year, so new Interests will be added to Meta in step with those updates. If an Interest is not available, try using a related term or conducting a Text Match search. At this time, users cannot add a new Interest to Meta.