I, for one, would like to be able to re-grow a finger if necessary

This gif is in no way accurate but I had fun making it in Midjourney.

Scientists have taken a surprising step toward unlocking regeneration in mammals, showing that the ability to rebuild complex body parts may not be lost after all—it may simply be switched off. Using a two-stage treatment, researchers redirected the body’s normal healing response away from scar formation and toward regrowth, successfully restoring bone, joints, ligaments, and tendons after amputation in animal studies.

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Source: Original article · Are.na block · Finds channel