AUTHOR= Frontiers Editorial Office TITLE=Retraction: Yizhi Qingxin formula extract ameliorates cognitive decline in aged rats via the brain-derived neurotrophic factor/tropomyosin receptor kinase B pathway JOURNAL=Frontiers in Pharmacology VOLUME=15 YEAR=2024 URL=https://www.frontiersin.org/journals/pharmacology/articles/10.3389/fphar.2024.1451575 DOI=10.3389/fphar.2024.1451575 ISSN=1663-9812