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The brain's garbage men

Microglial cells, the immune elements of the brain, are activated in disease or following injury. New findings indicate how these cells are switched on to remove damaged cells and cellular debris.

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Figure 1: Microglial activation.


  1. This article and the paper concerned1 were published online on 4 April 2007.


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Kettenmann, H. The brain's garbage men. Nature 446, 987–989 (2007).

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