If they say that all human cells replace themselves every 7 years or so, why can scars remain on your body for the entire life?
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scar tissue is shaped differently on a microscopic level that the rest of your skin. it replaces in roughly the same shape but the edges do shrink over time as more and more of the tissue corrects itself with each iteration, its just hard to notice because it takes such a considerable amount of time. i used to have 4 thick meaty scars down my back from when i was lil but they dont exist anymore
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