AUTHOR= Frontiers Editorial Office TITLE=Retraction: 1, 25-D3 protects from cerebral ischemia by maintaining BBB permeability via PPAR-γ activation JOURNAL=Frontiers in Cellular Neuroscience VOLUME=17 YEAR=2023 URL=https://www.frontiersin.org/journals/cellular-neuroscience/articles/10.3389/fncel.2023.1355800 DOI=10.3389/fncel.2023.1355800 ISSN=1662-5102