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July 2016 Volume 17 No 7

Microglia progenitors seed the central nervous system from the yolk sac; however, little is known about the origin of non-parenchymal macrophages. Prinz and colleagues (p 797; see News and Views by Greter, p 742) demonstrate that these central nervous system macrophages are related to, but distinct from, microglia and are largely of embryonic origin. The original image by Marta Joana Costa Jordao shows meningeal macrophages (green) within the leptomeninges (red). Artwork by Lewis Long.

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