Microglia Sculpt Sex Differences in Social Behavior

Microglia are increasingly recognized as developmental sculptors of neural circuits. In this issue of Neuron, VanRyzin et al. (2019) demonstrate a novel mechanism by which endocannabinoids drive microglia to phagocytose newborn astrocytes in the medial amygdala of male rats, promoting sex differences in social play behavior.

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