Microglia are the resident immune cells of the brain. As such, their activation is associated with a range of conditions in the healthy and inflamed CNS. In the healthy brain, microglia maintain homeostasis by continuously sampling their environment [1]. When CNS infection and/or inflammation occurs, microglia respond appropriately by changing their activation state. Recent studies illustrate that microglial activation is not an all or nothing event. Instead, like peripheral macrophages, microglia exhibit a range of activation states associated with pathogen defense, wound healing, and tissue repair functions (Fig. 1.1) [2, 3]. In addition, although microglia can change their morphology in response to specific stimuli, morphology is now well demonstrated to be a poor discriminator between different types of activation (Fig. 1.1) [2-4].
CITATION STYLE
Davis, D. S., & Carson, M. J. (2013). An introduction to CNS-resident microglia: Definitions, assays, and functional roles in health and disease. In Neural-Immune Interactions in Brain Function and Alcohol Related Disorders (pp. 3–29). Springer US. https://doi.org/10.1007/978-1-4614-4729-0_1
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