AUTHOR=Wei Penghui , Li Jianjun TITLE=Commentary: CD22 blockade restores homeostatic microglial phagocytosis in ageing brains JOURNAL=Frontiers in Immunology VOLUME=10 YEAR=2019 URL=https://www.frontiersin.org/journals/immunology/articles/10.3389/fimmu.2019.01301 DOI=10.3389/fimmu.2019.01301 ISSN=1664-3224