Damaged brain cells retrace their steps when they repair themselves, say US scientists.rnA microfluidic device has enabled the American team to study single mammalian axons - projections sent out by nerve cells - as they regenerate after laser-induced injury. Digant Dave and colleagues at the University of Texas, Arlington, say their method could provide insights into the effects of injury on the nervous system including the events that occur after spinal trauma. 'So much of regenerative neurobiology remains largely unknown,' declares Dave.
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