Fifteen minutes after this rat was paralyzed, researchers injected the rodent with Brilliant Blue G dye, a derivative of common food coloring Blue Number One. The dye reduced inflammation of the spinal cord, which allowed the rats to take clumsy steps—but not walk—within weeks, a new study says. In both rats and people, secondary inflammation following spinal cord trauma causes more lasting damage than the initial injury: Swelling sparks a small "stroke," which stops blood flow. (source: news.nationalgeographic.com)
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