{"id":"https://openalex.org/keywords/cd39","display_name":"CD39","description":"A cell-surface enzyme encoded by ENTPD1 that hydrolyzes extracellular nucleotides and influences immune regulation and signaling.","display_name_alternatives":["CD39 antigen","ecto-nucleoside triphosphate diphosphohydrolase 1","ectonucleoside triphosphate diphosphohydrolase 1","ENTPD1","NTPDase-1","NTPDase1"],"ids":{"openalex":"https://openalex.org/keywords/cd39","wikidata":"https://www.wikidata.org/wiki/Q17859534"},"primary_topic":{"id":"https://openalex.org/T11193","display_name":"Adenosine and Purinergic Signaling","score":0.3724,"subfield":{"id":"https://openalex.org/subfields/1314","display_name":"Physiology"},"field":{"id":"https://openalex.org/fields/13","display_name":"Biochemistry, Genetics and Molecular Biology"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},"topics":[{"id":"https://openalex.org/T11193","display_name":"Adenosine and Purinergic Signaling","score":0.3724,"subfield":{"id":"https://openalex.org/subfields/1314","display_name":"Physiology"},"field":{"id":"https://openalex.org/fields/13","display_name":"Biochemistry, Genetics and Molecular Biology"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T10158","display_name":"Cancer Immunotherapy and Biomarkers","score":0.098,"subfield":{"id":"https://openalex.org/subfields/2730","display_name":"Oncology"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T10031","display_name":"T-cell and B-cell Immunology","score":0.0977,"subfield":{"id":"https://openalex.org/subfields/2403","display_name":"Immunology"},"field":{"id":"https://openalex.org/fields/24","display_name":"Immunology and Microbiology"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}}],"works_count":3999,"cited_by_count":101373,"works_api_url":"https://api.openalex.org/works?filter=keywords.id:keywords/cd39","updated_date":"2026-10-23T04:06:34","created_date":"2026-09-30T00:00:00"}
