{"id":"S85110620","label":"Radioactive tracers","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85110620","normalized_label":"radioactive tracers","broader":["http://id.loc.gov/authorities/subjects/sh85110713","http://id.loc.gov/authorities/subjects/sh85136398"],"aliases":["Isotopic indicators, Radioactive","Radioactive indicators","Radioactive labels","Radioisotope tracers","Radiolabels","Radiotracers","Tracers, Radioactive"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85110620","provider":"lcsh","revision":"43b17d61909edade","taxonomy_revision":"f050b5d4780b1289","title":"Radioactive tracers","url":"/topics/S85110620","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"903042369988216324","address_version":"morton4x16-v1","coordinates":[0,20,19133,28672],"answer_status":"Directory metadata; local answer requires separate source review","truth_status":"Subject descriptor, not a factual answer or a demonstrated knowledge gap","reviewed_answer":null}