Microglia prune developing cortical blood vessels through PD-1 signaling
Nature Neuroscience, Published online: 16 July 2026; doi:10.1038/s41593-026-02378-x
Visualizing microglia and blood vessels in postnatal mouse cortex reveals that microglia contact and prune vessels, which is mediated by PD-L1–PD-1 signaling.