{"id":"S89005903","label":"Mouse mammary tumor virus","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh89005903","normalized_label":"mouse mammary tumor virus","broader":["http://id.loc.gov/authorities/subjects/sh85094722","http://id.loc.gov/authorities/subjects/sh85113381"],"aliases":["Bittner virus","MMTV (Virus)","Mammary cancer virus","Milk factor"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh89005903","provider":"lcsh","revision":"a299f17c13f26c11","taxonomy_revision":"f050b5d4780b1289","title":"Mouse mammary tumor virus","url":"/topics/S89005903","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"57640797646243334","address_version":"morton4x16-v1","coordinates":[0,21,14461,15360],"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}