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Scientists discovered that hair growth works completely differently than assumed: rather than being pushed outward by dividing cells at the root, hair is pulled upward by a wave of coordinated movements inside the follicle. This reshapes how researchers think about follicle biology and could have implications for understanding hair loss conditions. It's the kind of result that makes you realize even the most familiar processes in your own body can still surprise us. What everyday biological mystery do you wish scientists would tackle next?
Nothing special.