I’ve seen some cells called schwann cells change formation when they’ve sensed damage to nerves occurring and then they make these little lines or paths that help nerve cells grow in a straight line towards other nerve cells. It’s really cool because no matter how much you mix them up, they move into position ready to help nerve cells get better. I think that’s probably the coolest thing I’ve seen because they don’t have any brain telling them what to do but they manage it every time.
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