Tracy Dixon-Salazar was a stay-at-home mom who'd never been to college, but when her daughter, Savannah, started having seizures, she enrolled in biology classes to better understand her daughter's condition.

Eventually, Dixon-Salazar earned her Ph.D. in neurobiology, and she has focused her efforts on helping Savannah and other kids like her.

Savannah has had thousands of seizures — some that last for days at a time — but thanks to her mother's research, her condition has improved.

Dixon-Salazar devised a new treatment for Savannah that's reduced her seizures by 95 percent.

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