Immune Cells "Sculpt" Brain Circuits — by Eating Excess Connections, Boston Children's Hospital Study

6/19/2012 9:19:17 AM

The above movie shows an immune cell caught in the act of tending the brain – it's just eaten away unnecessary connections, or synapses, between neurons. That's not something these cells, known as microglia, were previously thought to do. As immune cells, it was thought that their job was to rid the body of unwanted pathogens and debris, by engulfing and digesting them.

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