The service provides search and text mining within the MedLine database of published literature on medical and biological research. It identifies occurrence of text specified by the searcher and detects combinations of biomedical concepts within the same abstract. This function returns results that are highly targeted to the combination rather than merely mentioning individual terms or concepts.
API methods support search for a single term with or without association with specified categories from a controlled list. Methods also support matches for a pair or a larger group of terms, with possible filters for fields where the terms co-occur and category matches.