Mo Costandi at the Guardian
The journey undertaken by newborn neurons in the adult mouse brain is like the cellular equivalent of the arduous upstream migration of salmon returning to their hatching river. Soon after being born in the subventricular zone near the back of the brain, these cells embark on a long-distance migration to the front-most tip of the brain. Their final destination – the olfactory bulb – is the furthest point from their birth place, and they travel two-thirds of the length of the brain to get there
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