Aging organs aren't worn out. In mice, 'zombie' cells piled up.

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1. 1Aging organs aren't worn out. In mice, 'zombie' cells piled up.0:00
2. 2One change to the cleanup crew. Five organs moved toward youth.0:15
3. 3Aging you can't square with wear and tear.0:37
4. 4Every organ keeps a cleanup crew. Aging jams its brake.0:57
5. 5Release the brake two ways. The cleanup comes back.1:34
6. 6The clearest proof: the crew fails at the zombies, then recovers.2:06
7. 7The same brake is already jammed in aging human organs.2:33
8. 8In these aged mice, some of what looked like organs wearing out was a cleanup crew held back by a single brake — release it, and the crew went back to work.2:57