Researchers discover a protein that prunes nerve endings, regulating sensitivity to pain

Like treetops reaching high into the sky to sense the sunlight, our sensory neurons—whose role is to collect information about what is happening in and around the body—grow long, intricate extensions known as axons. These extensions spread out throughout the body, conveying various sensations in response to different stimuli. But who is the constant gardener making sure that these extensions don’t grow wild over time?

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