[quote=@Savato]
<Snipped quote by Subject Zero>

Wouldn't aging cells actually stop healing ? You can amputate your infected members and grow them back later
[/quote]

But wouldn't healing regenerate those cells so that they [i]didn't[/i] age? Think about wolverine. Dudes been around a long time because his healing factor is regenerating his cells and keeping them (relatively) young.